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  • ZIB Catalog
  • Articles: DFG German National Licenses  (306)
  • 2000-2004  (306)
  • Magnetic resonance imaging  (158)
  • evolution  (76)
  • Complications  (72)
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  • ZIB Catalog
  • Articles: DFG German National Licenses  (306)
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  • 1
    Electronic Resource
    Electronic Resource
    Laparoscopic colectomy compares favorably with colectomy by laparotomy for reduction of postoperative ileus (2000)
    Springer
    Diseases of the colon & rectum 43 (2000), S. 61-65 
    Details
    ISSN: 1530-0358
    Keywords: Laparoscopic colectomy ; Laparotomy ; Postoperative ileus ; Complications ; Nasogastric tube ; Colectomy ; Colorectal surgery
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract PURPOSE: The aim of this study was to compare the length of postoperative ileus in patients undergoing colectomy by either laparotomy or laparoscopy. METHODS: A total of 166 patients were studied. These patients were divided into two groups: Group 1, in which colectomy was done laparoscopically, and Group 2, consisting of patients undergoing laparotomy. Both groups contained 83 patients who were matched for disease severity, indications for surgery, and procedure. Indications for surgery included sigmoid diverticulitis in 12 (14 percent) patients, polyps in 22 (27 percent), Crohn's disease in 21 (25 percent), colorectal cancer in 11 (13 percent), stoma reversal in 8 (10 percent), rectal prolapse in 3 (4 percent), and other indications in 6 (7 percent) in each group. Operations were colectomy with anastomosis (42 ileocolic, 26 colorectal, 6 colocolic, 4 ileorectal, and 2 ileal J pouch) or without anastomosis (3 abdominoperineal resections) performed by the same surgeons during the same time period (January 1993 to October 1996). The nasogastric tube was removed from all patients immediately after surgery in both groups. All patients received a clear liquid diet on the first postoperative day, followed by a regular diet as tolerated. The nasogastric tube was reinserted if two or more episodes of emesis of more than 200 ml occurred in the absence of bowel movement. Patients were discharged from the hospital when tolerating a regular diet without evidence of ileus. Statistical analysis was performed using unpairedt-test and Fisher's exact probability test. RESULTS: The male-to-female ratio was 38 to 45 in both groups. A total of 10 (12 percent) and 23 (28 percent) patients in Group 1 and Group 2 had emesis (P=0.02), and the rate of nasogastric tube reinsertion was 5 (6 percent) and 13 (16 percent), respectively (P〉0.05). There were significant differences between Groups 1 and 2 relative to the lengths of ileus (3.5±1.3vs. 5.4±1.7 days, respectively;P〈0.001), hospitalization (6.6±3.3vs. 8.1±2.5 days, respectively;P〈0.002), and operative time (170±60vs. 114±46 minutes, respectively;P〈0.001). The morbidity rate was 16 (19.2 percent) and 18 (21.6 percent) in the laparoscopy and laparotomy groups, respectively. CONCLUSIONS: Although early oral intake is safe and can be tolerated by 84 percent of patients after colectomy by laparotomy, laparoscopic colectomy reduced the lengths of both postoperative ileus and hospitalization.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02237245
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  • 2
    Electronic Resource
    Electronic Resource
    Closedvs. open hemorrhoidectomy—Is there any difference? (2000)
    Springer
    Diseases of the colon & rectum 43 (2000), S. 31-34 
    Details
    ISSN: 1530-0358
    Keywords: Hemorrhoidectomy ; Postoperative pain ; Complications
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract PURPOSE: The aim of this study was to compare closed (Ferguson) hemorrhoidectomy to open (Milligan-Morgan) hemorrhoidectomy regarding postoperative conditions, complications, and long-term results. METHOD: This was a randomized study of 77 patients with second-degree or third-degree hemorrhoids suitable for hemorrhoidectomy. In 39 patients the Milligan-Morgan procedure was used, and in 38 patients the Ferguson procedure was used. Details of operations, postoperative complications, and length of postoperative stay were recorded. Pain was assessed from a visual analog scale and by registration of postoperative analgesic medication. Follow-up was done at three weeks, six weeks, and by visit or telephone interview after at least a year. RESULTS: No statistically significant differences were found between the two methods regarding complications, pain, or postoperative stay. There were four reoperations for bleeding, all after Milligan-Morgan operations. At follow-up after three weeks 86 percent of the Ferguson patients had completely healed wounds, and none had signs of infection. Of the Milligan-Morgan patients, only 18 percent had completely healed wounds, and symptoms of delayed wound healing were significantly more frequent. One patient had a superficial wound infection. After one year more than 10 percent in each group had recurrent hemorrhoids with symptoms. CONCLUSION: Both methods are fairly efficient treatment for hemorrhoids, without serious draw-backs. The closed method has no advantage in postoperative pain reduction, but wounds heal faster, and the risk of wound dehiscence seems exaggerated.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02237240
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  • 3
    Electronic Resource
    Electronic Resource
    Audit of single-stage proctocolectomy for Crohn's disease (2000)
    Springer
    Diseases of the colon & rectum 43 (2000), S. 249-256 
    Details
    ISSN: 1530-0358
    Keywords: Single-stage proctocolectomy ; Crohn's disease ; Complications ; Delayed perineal wound healing ; Stomal complications ; Long-term results ; Recurrence ; Risk factor for recurrence
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract PURPOSE: This study was undertaken to review our overall experience of single-stage proctocolectomy for Crohn's disease. METHODS: One hundred three patients who underwent single-stage proctocolectomy for Crohn's disease between 1958 and 1997 were reviewed. Factors affecting the incidence of recurrence were examined using a multivariate analysis. RESULTS: Principal indications for proctocolectomy were chronic colitis (49 percent), acute colitis (37 percent), and anorectal disease (14 percent). The commonest postoperative complication was delayed perineal wound healing (n=36; 35 percent), followed by intra-abdominal sepsis (17 percent) and stomal complications (15 percent). In 23 patients the perineal wound healed between three and six months after proctocolectomy, whereas in 13 patients the wound remained unhealed for more than six months. There were two hospital deaths (2 percent) caused by sepsis. The 5-year, 10-year, and 15-year cumulative reoperation rates for small-bowel recurrence were 13, 17, and 25 percent, respectively, after a median follow-up of 18.6 years. From a multivariate analysis, factors affecting reoperation rate for recurrence were gender (male; hazard ratio 2.4vs. female;P=0.03) and age at operation (≤30 years; hazard ratio 2.6vs. 〉30 years;P=0.04). The following factors did not affect the reoperation rate: duration of symptoms, smoking habits, associated perforating disease, coexisting small-bowel disease, postoperative complications, and medical treatment. CONCLUSIONS: Proctocolectomy for Crohn's disease is associated with a high incidence of complications, particularly delayed perineal wound healing. Proctocolectomy carries a low recurrence rate in the long term. However, young male patients are at high risk of recurrence.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02236990
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  • 4
    Electronic Resource
    Electronic Resource
    Femoral neuropathy: An infrequently reported postoperative complication (2000)
    Springer
    Diseases of the colon & rectum 43 (2000), S. 419-422 
    Details
    ISSN: 1530-0358
    Keywords: Neuropathy ; Femoral nerve ; Colectomy ; Complications ; Retractors
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Postoperative femoral neuropathy is an uncommon complication of abdominal surgery. We present four cases occurring after colectomy at our institution and discuss the diagnosis and treatment.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02258312
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  • 5
    Electronic Resource
    Electronic Resource
    Safety and efficacy of dynamic graciloplasty for fecal incontinence (2000)
    Springer
    Diseases of the colon & rectum 43 (2000), S. 743-751 
    Details
    ISSN: 1530-0358
    Keywords: Fecal incontinence ; Dynamic graciloplasty ; Neurostimulation ; Complications
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract PURPOSE: Dynamic graciloplasty has been used for intractable fecal incontinence, and good results have been reported. The aim of this study was to assess prospectively the safety and efficacy of dynamic graciloplasty for intractable fecal incontinence in a prospective, multicenter trial. METHODS: A total of 123 adults were treated with dynamic graciloplasty at 20 institutions. Continence was assessed preoperatively and postoperatively by use of 14-day diaries. RESULTS: There was one treatment-related death. One hundred eighty-nine adverse events occurred in 91 patients (74 percent). Forty-nine patients (40 percent) required one or more operations to treat complications. One hundred seventy (90 percent) events were resolved. Sixty-three percent of patients without pre-existing stomas recorded a 50 percent or greater decrease in incontinent events 12 months after dynamic graciloplasty, and an additional 11 percent experienced lesser degrees of improvement. Twenty-six percent were not improved, worsened, or exited. In patients with pre-existing stomas, 33 percent achieved successful outcomes at 12 months. This number increased to 60 percent at 18 months. Seventy-eight percent of patients had increased enema retention time, and mean anal canal pressures improved significantly at 12 months. Significant changes in quality of life were also observed. CONCLUSIONS: Objective improvement can be demonstrated in the majority of patients with end-stage fecal incontinence treated with dynamic graciloplasty. Reduction in incontinence episodes can be correlated with improved quality of life. Adverse events are frequently encountered, but most resolve with treatment.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02238008
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  • 6
    Electronic Resource
    Electronic Resource
    A Prospective Analysis of the Cephalic Vein Cutdown Approach for Chronic Indwelling Central Venous Access in 100 Consecutive Cancer Patients (2000)
    Springer
    Annals of surgical oncology 7 (2000), S. 496-502 
    Details
    ISSN: 1534-4681
    Keywords: Cephalic vein ; Subclavian vein ; Central venous access ; Implanted port ; Tunneled catheter ; Complications
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Background: Chronic indwelling central venous access devices (CICVAD) generally are placed by the percutaneous subclavian vein approach. The cephalic vein cutdown approach is used only infrequently. Although the technique has been well described, few prospective data are available on the cephalic vein cutdown approach. Methods: From September 9, 1998, to July 20, 1999, the cephalic vein cutdown approach was attempted in 100 consecutive cancer patients taken to the operating room with the intention of placing CICVAD. Median patient age was 54.5 years (range 18–88), with 46 men and 54 women. Twenty-five patients had gastrointestinal malignancies, 17 had breast cancer, 15 had lymphoma, 13 had lung cancer, 12 had leukemia, 5 had multiple myeloma, and 13 had other malignancies. Patients were followed prospectively for immediate and long-term outcome. Results: CICVAD placement via the cephalic vein cutdown approach was successful in 82 patients; the remaining 18 patients required conversion to a percutaneous subclavian vein approach. The reasons for inability to place CICVAD via cephalic vein cutdown approach were a cephalic vein that was too small (10 patients), an absent cephalic vein (7 patients), and inability to traverse the angle of insertion of the cephalic vein into the subclavian vein (1 patient). There were 56 subcutaneous ports and 26 tunneled catheters. Median operating time was 44 minutes (range, 26–79 minutes). No postoperative pneumothorax occurred. Median catheter duration was 198 days (range, 0–513 days). Long-term complications included catheter-related bacteremia (6%), site infection (2%), deep venous thrombosis (5%), port pocket hematoma (1%), and superior vena cava stricture (1%). Thirty-seven percent of patients have died since CICVAD placement. Twenty-nine percent of the CICVADs have been removed. Conclusions: The cephalic vein cutdown approach was successful in 82% of patients. This approach is a safe and useful alternative to the percutaneous subclavian vein approach.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s10434-000-0496-9
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  • 7
    Electronic Resource
    Electronic Resource
    Use of a gracilis muscle flap to facilitate delayed ileal pouch-anal anastomosis (2000)
    Springer
    Diseases of the colon & rectum 43 (2000), S. 1628-1631 
    Details
    ISSN: 1530-0358
    Keywords: Gracilis muscle flap ; Ileal pouch-anal anastomosis ; Complications
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Failure of an ileal pouch-anal anastomosis may result in unsuccessful completion of the anastomosis or removal of an ischemic pouch. We report a technique for preservation of the muscular wall of the rectum after mucosal dissection, which allowed a successful delayed pull-through.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02236752
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  • 8
    Electronic Resource
    Electronic Resource
    Effect of previous surgery on abdominal opening time (2000)
    Springer
    Diseases of the colon & rectum 43 (2000), S. 1749-1753 
    Details
    ISSN: 1530-0358
    Keywords: Adhesions ; Operative technique ; Complications ; Economics
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract PURPOSE: The purpose of this study was to document prospectively the time required to gain access to the abdomen to perform a planned procedure in patients with and without previous surgery. METHODS: Patients were obtained from the consecutive cases of 11 surgeons at three colorectal surgery centers. Opening time (skin incision to retractor placement) was measured and recorded in the operating room by the circulating nurse or by an independent researcher. Demographic data including the number and type of previous operations and the presence and severity of adhesions were recorded by the staff surgeon. A comparison of opening times between patients with and without previous abdominal operations was conducted. RESULTS: One hundred ninety-eight patients had abdominal operations. Fifty-five percent had previous abdominal procedures. Patients with prior surgery required a mean of 21 minutes to open their abdomens, whereas patients without prior surgery required a mean of 6 minutes (P〈0.01). The median times were 17 and 6 minutes, respectively. Eighty-three percent of patients with prior surgery had adhesions, whereas only 7 percent of patients had adhesions on their initial operation. Patients with prior surgery also had higher grade adhesions (P〈0.001). Irrespective of previous surgery, comparing patients with adhesions with those without, patients with adhesions required a mean of 22 minutes to open, whereas the lack of adhesions resulted in a mean opening time of 6 minutes. CONCLUSIONS: Previous surgery and the presence of adhesions add significant time to opening the abdomen.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02236862
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  • 9
    Electronic Resource
    Electronic Resource
    Lumbar osteomyelitis and epidural abscess complicating recurrent pilonidal cyst (2000)
    Springer
    Diseases of the colon & rectum 43 (2000), S. 1015-1017 
    Details
    ISSN: 1530-0358
    Keywords: Pilonidal cyst ; Lumbar osteomyelis ; Epidural abscess ; Complications
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract PURPOSE: This study was conducted to report the rare presentation of lumbar osteomyelitis and epidural abscess as a complication of a pilonidal cyst. METHODS: A case report is presented. RESULTS: We describe the rare case of a male patient with diabetes with a recurring pilonidal cyst who developed a lumbar osteomyelitis and epidural abscess three weeks after pilonidal cyst excision with epidural anesthesia, with a fatal outcome despite emergency treatment. CONCLUSIONS: Life-threatening complications should be kept in mind in high-risk patients with repetitive surgery and neurologic involvement.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02237370
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  • 10
    Electronic Resource
    Electronic Resource
    Analysis of the Anatomic Changes in the Thoracic Cage After a Lung Resection Using Magnetic Resonance Imaging (2000)
    Springer
    Surgery today 30 (2000), S. 879-885 
    Details
    ISSN: 1436-2813
    Keywords: Key words Lung lobectomy ; Magnetic resonance imaging ; Left ventricular geometry ; Mediastinum ; Diaphragm
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The thoracic cage after a lung resection is filled by the remaining lobes, the elevated diaphragm, the diminished thoracic cage, and by mediastinal shifting. The changes in the thorax after a lung resection were quantified using magnetic resonance imaging. The study group consisted of 39 patients who had undergone a lobectomy, four who had undergone a pneumonectomy, and 14 controls. The left ventricular angle, ascending aortic angle, mediastinal shift, longitudinal length of the thoracic cage, the distance between the thoracic apex and the level of the aortic valve, and diaphragmatic elevation were all measured. After a right lower lobectomy, the mediastinum shifted more rightward than after a right upper lobectomy. The diaphragm became more greatly elevated after a right upper lobectomy than after a right lower lobectomy. When a chest wall resection was added to a right upper lobectomy, the mediastinal anatomical changes decreased. After a left upper lobectomy, the degree of mediastinal shifting was greater than after a left lower lobectomy. A left upper lobectomy shifted the mediastinum at the level of the right atrium. This method is easily reproducible and was found to be effective for quantifying the changes in the thorax after a lung resection.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s005950070038
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  • 11
    Electronic Resource
    Electronic Resource
    Erfahrungen mit der Osteosynthese bei Fersenbeinfrakturen (2000)
    Springer
    Trauma und Berufskrankheit 2 (2000), S. S442 
    Details
    ISSN: 1436-6274
    Keywords: Schlüsselwörter Intraartikuläre Fersenbeinfraktur ; Klassifikation ; Weichteilschaden ; Komplikationen ; Ergebnisse ; Keywords Intraarticular calcaneal fracture ; Classification ; Soft tissue lesions ; Complications ; Results
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Abstract Even now, the diagnosis of a dislocated intraarticular calcaneal fracture means a handicap for many patients. A bilateral fracture usually means the end of professional life – especially in the case of any job involving physical work. Because the functional outcome after an intraarticular calcaneal fracture is determined by the degree to which restoration of the different articular surfaces, and of the height, length and width of the affected calcaneus is achieved, operative treatment has become much more frequent in recent years. Discussion continues on the operative treatment of high comminuted fractures. The available studies are not comparable, differing as they do in the classification systems and criteria of outcome used and the postoperative check-up schedules followed. Despite some progress towards standardization of the operative procedure in the last 10 years, especially with respect to soft tissue treatment and the types of implants used, several questions remain to be answered. Our own experience is reported.
    Notes: Zusammenfassung Die Diagnose einer intraartikulären dislozierten Fersenbeinfraktur bedeutet auch heute noch für viele Patienten eine Einschränkung der künftigen Belastbarkeit, bei beidseitiger Betroffenheit in der Regel das Ausscheiden aus einem körperlich belasteten Beruf. Da sich das funktionelle Ergebnis der Fersenbeinfraktur im Wesentlichen durch die Wiederherstellung der Gelenkflächen, Höhe, Länge und Breite sowie Achsen des Fersenbeins beeinflussen lässt, hat die operative Rekonstruktion in den letzten Jahren deutlich zugenommen. Die Diskussion über die operative Versorgung von Fersenbeinfrakturen ist insbesondere bei Trümmerfrakturen noch nicht als abgeschlossen zu betrachten. Die vorliegende Fülle von Studien ist bezüglich der Klassifikation, der Nachuntersuchungskriterien und der Nachuntersuchungszeiträume nur schwer zu vergleichen. Trotz einer seit nun mehr als über einem Jahrzehnt perfektionierten und zunehmend standardisierten Operationstechnik bleiben noch viele Fragen zu beantworten. Über Schwierigkeiten bei der operativen Versorgung wird berichtet.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/PL00014967
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  • 12
    Electronic Resource
    Electronic Resource
    Aktuelle Behandlungsstrategien bei distalen Unterarmfrakturen (2000)
    Springer
    Trauma und Berufskrankheit 2 (2000), S. S205 
    Details
    ISSN: 1436-6274
    Keywords: Schlüsselwörter Distale Unterarmfrakturen ; Konservative Therapie ; Operative Therapie ; Risiken ; Komplikationen ; Keywords Distal fractures of lower arm ; Conservative therapy ; Operative therapy ; Risks ; Complications
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Abstract The treatment of distal fractures of the lower arm can be conservative or operative. The immediate aims of any treatment are anatomical realignment and the avoidance of trophic impairments, with the ultimate objective of unrestricted function of the hand and wrist. A graduated treatment scheme based on the ASIF classification is necessary to do justice to the different forms of fracture that can occur. The majority of injuries can still be successfully treated by conservative means; operative treatment becomes more important when there are signs of unusually high levels of instability or joint involvement. The authors’ own patient population is presented in this paper: in these patients fixation with Kirschner wires has proved to be the most successful of the operative procedures used, followed by palmar plate fixation with or without cancellous bone plasty, and for C-type fractures according to the ASIF classification or when there ¶is severe soft-tissue damage, application of ¶a fixateur externe spanning the joint has proved best. Treatment strategy, risks, complications and results are presented.
    Notes: Zusammenfassung Die Behandlung distaler Unterarmfrakturen kann konservativ oder operativ erfolgen. Ziel jeder Behandlung sind die anatomische Reposition und Retention sowie die Vermeidung trophischer Störungen mit dem Fernziel einer unbeeinträchtigten Funktion der Hand und des Handgelenks. In Anlehnung an die AO-Klassifikation ist ein stufenförmiges Behandlungsschema notwendig, um den verschiedenen Frakturformen gerecht zu werden. Ein Großteil der Verletzungen kann nach wie vor erfolgreich konservativ behandelt werden, bei Zeichen einer erhöhten Instabilität oder einer Gelenkbeteiligung rückt die operative Behandlung zunehmend in den Vordergrund. Im eigenen, dargestellten Krankengut hat sich bei den operativen Verfahren schwerpunktmäßig die Kirschner-Draht-Osteosynthese bewährt, nachfolgend die palmare Plattenosteosynthese mit oder ohne Spongiosaplastik und bei Frakturen der C-Typen nach AO und bei höhergradigem Weichteilschaden die gelenkübergreifende Fixateur-externe-Anordnung. Behandlungsstrategie, Risiken, Komplikationen und Ergebnisse werden dargestellt.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/PL00014888
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  • 13
    Electronic Resource
    Electronic Resource
    Spezielle Probleme bei Wirbelfrakturen mit Querschnittlähmung (2000)
    Springer
    Trauma und Berufskrankheit 2 (2000), S. S500 
    Details
    ISSN: 1436-6274
    Keywords: Schlüsselwörter Hoffnung ; Selbstständigkeit ; Komplikationen ; Gangschulung ; Keywords Hope ; Independence ; Complications ; Mobility training
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Abstract In the treatment of paraplegic patients ¶there is a definite discrepancy between the ideas and wishes of the patients and the approaches and objectives of the physiotherapists. The greatest concern of the person affected is recovery of the ability to walk, while the main emphases of physiotherapy primarily involve avoiding complications of paralysis and achieving the highest possible degree of independence. One aid used in teaching partially paralysed patients to walk again is the walking belt, which complements the neurophysiological treatment methods very well. Mobility training with completely paralysed patients is obviously restricted owing to the lack of function. Sources of problems include relapsing shoulder pain and marked spasticity, which limit the results that can be achieved by way of rehabilitation medicine. With the support of an electronic measuring system the threat of pressure sores can be successfully combated.
    Notes: Zusammenfassung In der Behandlung Querschnittgelähmter besteht zwischen den Vorstellungen und Wünschen der Patienten und den Gesichtspunkten und Zielen der Physiotherapie eine deutliche Diskrepanz. Der Betroffene erhofft sich v. a. das Wiedererlangen seiner Gehfähigkeit, die Schwerpunkte der Physiotherapie liegen in erster Linie auf der Vermeidung lähmungsbedingter Komplikationen und dem Erreichen maximaler Selbstständigkeit. Gangschulung wird bei inkomplett Gelähmten u. a. mit Hilfe des Laufbands durchgeführt, das eine hervorragende Ergänzung der neurophysiologischen Behandlungstechniken darstellt. Das Gehtraining mit komplett Gelähmten reduziert sich naturgemäß aus Mangel an funktionellen Einsatzmöglichkeiten. Unter anderem können rezidivierende Schulterschmerzen und starke Spastik Probleme darstellen und sich limitierend auf das Rehabilitationsergebnis auswirken. Der Dekubitusgefahr wird, unterstützt durch ein elektronisches Messsystem, erfolgreich entgegengewirkt.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/PL00014982
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  • 14
    Electronic Resource
    Electronic Resource
    Die Lage der Vogelsystematik (2000)
    Springer
    Journal of ornithology 141 (2000), S. 263-274 
    Details
    ISSN: 1439-0361
    Keywords: Systematics ; evolution ; anagenesis ; genealogy ; reference system
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Description / Table of Contents: Zusammenfassung Verglichen mit anderen Tiergruppen, scheint die artliche Bestandsaufnahme der rezenten Vögel nahezu abgeschlossen zu sein. Doch ist das System der Vögel weiterhin umstritten und mit vielen Neuerungen konfrontiert. Die Gründe dafür liegen hauptsächlich in neuen, vor allem molekularbiologischen Methoden und in den unerwartet reichen Fossilfunden der jüngsten Zeit. Als Beispiele werden Altgaumenvögel, Kranichvögel, Ibisse, Flamingos, Mausvögel, Hopfe und Sperlingsvögel kurz behandelt. Die hier erzielten Fortschritte lassen die Befürchtung Stresemanns, die Großsystematik der Vögel sei mit den vorhandenen Methoden phylogenetisch nicht interpretierbar, zunächst als unbergründet erscheinen. Doch erwachsen einer solchen Interpretation andere Hindernisse, deren Bedeutung bisher zu wenig beachtet wurde, nämlich Parallelentwicklungen, die viel verbreiteter sind als gemeinhin angenommen. Ihre Häufigkeit lässt sich sogar mit evolutionsbiologischen Argumenten begründen. Es ist deshalb nicht zu erwarten, dass die Diskussionen um das „richtige“ System bald verstummen. Um dennoch die Eindeutigkeit der Information in nicht-systematischen Veröffentlichungen zu wahren, wird empfohlen ein etabliertes Referenzsystem auf Zeit zu wählen.
    Notes: Summary Unlike in most animal classes the inventory of extant species of the class Aves seems to be almost complete. Nevertheless avian systematics is challenged by many novelties and seems far from being settled. This is caused mainly by the application of novel methods of molecular analysis to phylogenetic problems and by the unexpectedly rich fossil record collected within the last 10–20 years. Examples from the Palaeognathae, Gruiformes, Threskiornithidae, Phoenicopteridae, Coliiformes, Upupiformes and Passeriformes are briefly treated. The progress in the field seems to disprove Stresemann's pessimistic view that the phylogeny of higher categories (orders) cannot be reconstructed by the available methods. However, phylogenetic interpretations are impeded by obstacles not considered by Stresemann and highly underestimated in most cases, namely by multiple independent developments leading to identical features. Frequent parallel developments are to be expected for theoretical evolutionary reasons. The diagnosis of such homoplasies can be extremely difficult or even impossible. Therefore we cannot expect the discussion about the “best” system of birds to end in the near future. Considering this dynamic situation in systematics, it is recommended to maintain unambiguousness of information in not strictly systematic publications by refering to a well established system as a temporally limited reference.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02462236
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  • 15
    Electronic Resource
    Electronic Resource
    Emergence and Maintenance of Sex among Diploid Organisms Aided by Assortative Mating (2000)
    Springer
    Acta biotheoretica 48 (2000), S. 137-147 
    Details
    ISSN: 1572-8358
    Keywords: Sex ; sexual selection ; mate selection ; evolution ; ploidy ; assortative mating ; recombination
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Using computer simulations I studied the simultaneous effect of variable environments, mutation rates, ploidy, number of loci subject to evolution and random and assortative mating on various reproductive systems. The simulations showed that mutants for sex and recombination are evolutionarily stable, displacing alleles for monosexuality in diploid populations mating assortatively under variable selection pressure. Assortative mating reduced excessive allelic variance induced by recombination and sex, especially among diploids. Results suggest a novel adaptive value for sex and recombination. They show that the adaptive value of diploidy and that of the segregation of sexes is different to that of sex and recombination. The results suggest that the emergence of sex had to be preceded by the emergence of diploid monosexual organisms and provide an explanation for the emergence and maintenance of sex among diploids and for the scarcity of sex among haploid organisms.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1002765101959
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  • 16
    Electronic Resource
    Electronic Resource
    Multitrophic effects of herbivore-induced plant volatiles in an evolutionary context (2000)
    Springer
    Entomologia experimentalis et applicata 97 (2000), S. 237-249 
    Details
    ISSN: 1570-7458
    Keywords: herbivores ; predators ; parasitoids ; mutualism ; induced defence ; behaviour ; ecology ; evolution ; sensory physiology ; plant fitness ; pathogens
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Herbivorous and carnivorous arthropods use plant volatiles when foraging for food. In response to herbivory, plants emit a blend that may be quantitatively and qualitatively different from the blend emitted when intact. This induced volatile blend alters the interactions of the plant with its environment. We review recent developments regarding the induction mechanism as well as the ecological consequences in a multitrophic and evolutionary context. It has been well established that carnivores (predators and parasitoids) are attracted by the volatiles induced by their herbivorous victims. This concerns an active plant response. In the case of attraction of predators, this is likely to result in a fitness benefit to the plant, because through consumption a predator removes the herbivores from the plant. However, the benefit to the plant is less clear when parasitoids are attracted, because parasitisation does usually not result in an instantaneous or in a complete termination of consumption by the herbivore. Recently, empirical evidence has been obtained that shows that the plant's response can increase plant fitness, in terms of seed production, due to a reduced consumption rate of parasitized herbivores. However, apart from a benefit from attracting carnivores, the induced volatiles can have a serious cost because there is an increasing number of studies that show that herbivores can be attracted. However, this does not necessarily result in settlement of the herbivores on the emitting plant. The presence of cues from herbivores and/or carnivores that indicate that the plant is a competitor- and/or enemy-dense space, may lead to an avoidance response. Thus, the benefit of emission of induced volatiles is likely to depend on the prevailing faunal composition. Whether plants can adjust their response and influence the emission of the induced volatiles, taking the prevalent environmental conditions into account, is an interesting question that needs to be addressed. The induced volatiles may also affect interactions of the emitting plant with its neighbours, e.g., through altered competitive ability or by the neighbour exploiting the emitted information. Major questions to be addressed in this research field comprise mechanistic aspects, such as the identification of the minimally effective blend of volatiles that explains the attraction of carnivores to herbivore-infested plants, and evolutionary aspects such as the fitness consequences of induced volatiles. The elucidation of mechanistic aspects is important for addressing ecological and evolutionary questions. For instance, an important tool to address ecological and evolutionary aspects would be to have plant pairs that differ in only a single trait. Such plants are likely to become available in the near future as a result of mechanistic studies on signal-transduction pathways and an increased interest in molecular genetics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1004111624780
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  • 17
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    Electronic Resource
    The making of a pest: recruitment of Meligethes aeneus onto oilseed Brassicas (2000)
    Springer
    Entomologia experimentalis et applicata 95 (2000), S. 141-149 
    Details
    ISSN: 1570-7458
    Keywords: ecology ; reproductive success ; fecundity ; intraspecific competition ; evolution ; pest outbreaks ; pest control ; chemical control ; economic threshold ; oilseed rape ; turnip rape
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Populations of the rapeseed pollen beetle Meligethes aeneus F. (Col., Nitidulidae) from areas with 0–16 years of history of intensive rapeseed growing were compared for key ecological characters. During the first 16 years of rapeseed cultivation the reproductive success of M. aeneus increased 200–300% over that of the beetles living on the natural host plants, cruciferous weeds. The increase was linear over time and statistically highly significant, and it did not appear to be related to food quality or to the size of the beetles. During the same period the tolerance to intraspecific competition decreased, possibly due to the relative absence of such competition on the new crop. Furthermore, the optimum population density for M. aeneus to maximize the size of its next generation on summer turnip rape was determined to be 0.5–1.0 beetles/plant, which is slightly below the economic threshold for chemical control (1 beetle/plant). Therefore the practical protection of the rapeseed yield also ensures the highest possible pest population size for the next year. These mechanisms may in part explain the particular noxiousness of the species as a pest all over Europe. In general these data show that after the introduction of a new crop plant into a region, significant changes during the recruitment process in a pestiferous insect may take place, contributing to the future pest status of the insect. It is suggested that such genetic and ecological changes in insects may be a more common mechanism than previously thought in initiating and sustaining pest outbreaks, and that conventional pest management methods may enhance that effect.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1003947706788
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  • 18
    Electronic Resource
    Electronic Resource
    Copulatory Courtship in Drosophila: Behavior and Songs of D. birchii and D. serrata (2000)
    Springer
    Journal of insect behavior 13 (2000), S. 71-86 
    Details
    ISSN: 1572-8889
    Keywords: copulatory courtship ; behavioral interactions ; songs ; evolution
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract D. birchii and D. serrata, two endemic Australian Drosophila species, have a copulatory courtship. The males of these species begin to court the female after mounting her and often go on with the courtship after the copulation is over. In the present paper we have described behavioral interactions between the male and the female and analyzed acoustic signals produced by the flies during courtship. Species differences were more pronounced in female than in male behavior. Variation within the species was obvious in the relative proportions of time the flies spent in different behaviors. Even though courtship took place nearly solely during copulation, some remains of precopulatory courtship were observed in both species. It is suggested that copulatory courtship exhibited by D. birchii and D. serrata flies is a derived rather than a primitive character.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1007715609756
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  • 19
    Electronic Resource
    Electronic Resource
    Evolution of Ti–Sn-rutile-supported V2O5–WO3 catalyst during its use in nitric oxide reduction by ammonia (2000)
    Springer
    Topics in catalysis 11-12 (2000), S. 131-138 
    Details
    ISSN: 1572-9028
    Keywords: rutile supported V2O5–WO3 catalyst ; evolution ; NO reduction
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract This paper concerns the relation between surface structure of crystalline vanadia-like active species on vanadia–tungsta catalyst and their activity in the selective reduction of NO by ammonia to nitrogen. The investigations were performed for Ti–Sn-rutile-supported isopropoxy-derived catalyst. The SCR activity and surface species structure were determined for the freshly prepared catalyst, for the catalyst previously used in NO reduction by ammonia (320 ppm NO, 335 ppm NH3 and 2.35 vol% O2) at 573 K as well as for the catalyst previously annealed at 573 K in helium stream containing 2.35 vol% O2. The crystalline islands, exposing main V2O5 surface, with some tungsten atoms substituted for V-ones, were found, with XPS and FT Raman spectroscopy, to be present at the surface of the freshly prepared catalyst. A profound evolution of the active species during the catalyst use at 573 K was observed. Dissociative water adsorption on V5+OW6+ sites is discussed as mainly responsible for the catalyst activity at 473 K and that on both V5+OW6+ and V4+OW6+ sites as determining the activity at 523 K.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1027299931119
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  • 20
    Electronic Resource
    Electronic Resource
    Management intraoperativer Komplikationen bei der Applikation stentgestützter Aortenprothesen (2000)
    Springer
    Gefässchirurgie 5 (2000), S. 232-240 
    Details
    ISSN: 1434-3932
    Keywords: Schlüsselwörter Endovaskuläre Operationen ; Stents ; Aortenstentprothese ; Bauchaortenaneurysma ; Komplikationen ; Keywords Endovascular surgery ; Stents ; Aortic stent prostheses ; Aneurysm ; Abdominal aorta ; Complications
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Abstract  Intraoperative complications can be divided into three categories on the basis of the time of their occurrence: Group I – Problems associated with access; group II: introduction of the endovascular stent (a: release of the main segment, b: anchoring the second limb); and group III: incidence of primary endoleaks. The objective of the present study was to describe the management of these complications. In a group of 130 patients undergoing endovascular treatment of aneurysms of the abdominal aorta, a total of 31 complications occurred in 26 patients (20.0%). The most frequently encountered complication in each group and its respective management was as follows: Group I: Correction was performed using dilatation and retroperitoneal stretching as well as surgical shortening of the external iliac artery with interposition; group IIa: overstenting the renal arteries was corrected either by conversion or tugging at the endograft; group IIb: the guide wire or docking system could not be placed. Such cases were managed either through conversion or use of fresh systems; group III: such complications were treated with repeated stent placement, postoperative coil embolizations, or conversion. The endovascular therapy of aortic aneurysms is associated with intraoperative complications in 20% of cases. Adequate management helps to keep both morbidity and mortality rates low.
    Notes: Zusammenfassung  Intraoperative Komplikationen können je nach Zeitpunkt des Ereignisses in 3 Gruppen definiert werden: Gruppe I – Zugangsprobleme, Gruppe II – Einbringen des endovaskulären Stents (a: Absetzen des Hauptteils, b: Andocken des 2. Schenkels), Gruppe III – Inzidenz primärer Endoleaks. Zielsetzung dieser retrospektiven Studie war es, das Management zur Behebung dieser Komplikationen darzustellen. Von 130 Patienten mit endovaskulärer Ausschaltung eines Aortenaneurysmas traten bei 26 Patienten 31 intraoperative Komplikationen auf (20,0%). Die führenden Komplikationen in jeder Gruppe sowie das daraus resultierende Management waren: Gruppe I: Die Korrektur erfolgte durch Dilatation, retroperitoneale Streckung, Kürzungsoperation der A. iliaca externa und Interponat. Gruppe II a: Bei Überstentung der Nierenarterien erfolgte die Konversion oder Zug am Endograft. Gruppe II b: Führungsdraht oder Andocksystem können nicht platziert werden. Die Behebung erfolgte durch Konversion und Anwendung neuer Systeme. Gruppe III: Hier wurden erneute Stentplazierungen, postoperativer Coil-Embolisationen und Konversionen durchgeführt. Die endovaskuläre Therapie aortaler Aneurysmen birgt eine Rate intraoperativer Schwierigkeiten von 20%. In 3,8% der Fälle musste eine Konversion durchgeführt werden. Durch adäquates Management konnten die Letalität (1/26) und Morbidität jedoch gering gehalten werden.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/PL00010600
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  • 21
    Electronic Resource
    Electronic Resource
    Röntgendiagnostik in der Mund-, Kiefer-, Gesichtschirurgie (2000)
    Springer
    Mund-, Kiefer- und Gesichtschirurgie 4 (2000), S. S270 
    Details
    ISSN: 1434-3940
    Keywords: Schlüsselwörter ; Röntgendiagnostik ; Panoramaschichtaufnahme ; Strahlenexposition ; Computertomographie ; Kernspintomographie ; Key words ; X-ray diagnostics ; Panoramic X-ray ; Radiation exposure ; Computed tomography ; Magnetic resonance imaging
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Summary A vital X-ray imaging technique in oral and craniomaxillofacial surgery is the panoramic X-ray. Due to its variety of special projections, including imaging of the transversal level and low exposure to radiation, it is suitable for answering many clinical questions and for diagnostics of various findings. It has become possible to minimize the necessary doses by further development of technology and devices, as well as of X-ray films and by new detection systems, such as sensors or screens. In some clinical cases, the diagnostic deficiencies of conventional imaging techniques make computed tomography (CT) and magnetic resonance (MR) imaging indispensable. Although MR is particularly suitable for soft tissue imaging, it has also become helpful in finding cortical changes by shorter measuring times. In certain cases, e. g., changes to bone metabolism, differentiated methods of nuclear medicine make image-aided analysis of function possible.
    Notes: Zusammenfassung Zentrale Aufnahmeart in der Röntgendiagnostik der Mund-, Kiefer- und Gesichtschirurgie ist die Panoramaschichtaufnahme. Mit ihren zahlreichen Spezialprojektionen einschließlich der Abbildung der Transversalebene ist sie für die Abklärung zahlreicher Fragestellungen mit geringer Strahlenexposition geeignet. Die Verringerung des Dosisbedarfs ist weiterhin durch Fortentwicklungen der Gerätetechnik, der Röntgenfilme und durch neue Detektionssysteme wie z. B. Sensoren oder Speicherfolien möglich geworden. Diagnostische Unzulänglichkeiten der konventionellen Aufnahmearten machen bei zahlreichen klinischen Fragestellungen der Mund-, Kiefer- und Gesichtschirurgie eine Bildgebung mittels Computertomographie und Kernspintomographie unumgänglich. Obgleich die Kernspintomographie v. a. für die Weichteildiagnostik vorrangig geeignet ist, erlaubt sie mittlerweile, aufgrund der Verkürzung der Messzeiten, auch Veränderungen der Kortikalis abzubilden. Bei bestimmten Fragestellungen, wie z. B. Veränderungen des Knochenmetabolismus, ermöglichen differenzierte nuklearmedizinische Verfahren eine abbildungsunterstützte Funktionsanalyse.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/PL00014549
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  • 22
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    Electronic Resource
    Radiologic anatomy of the spinal dorsal horn at the cervical level (anatomic-MRI correlations) (2000)
    Springer
    Surgical and radiologic anatomy 22 (2000), S. 81-88 
    Details
    ISSN: 1279-8517
    Keywords: Spinal cord ; Dorsal horn ; Magnetic resonance imaging ; Radiologic anatomy ; Dorsal root entry zone
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The spinal dorsal horn is known for its important functional role in the field of transmission and modulation of sensory afferents. Because of this, the dorsal horn represents a target for numerous analgesic and antispastic procedures. Thus, it would be interesting to develop imaging dedicated to this spinal structure. The purpose of this study was to investigate the radiologic anatomy of the cervical dorsal horn by magnetic resonance imaging (MRI) (1.5T). The first step consisted in the validation of the anatomic information provided by MRI on 5 human cadavers. A spin-echo sequence (T2, 2000/45) enabled the demonstration of good correlations between histologic sections and axial MRI slices performed at the corresponding cervical levels. The second step was the 〈〈in vivo〈〈 exploration of 20 subjects, aiming at the development of a gradient echo sequence (T2*) with a conventional MRI unit, compatible with a routine clinical examination. The dorsal horn was clearly identified in 77% of the axial slices performed (n = 300). The angle between the dorsal horn axis and the sagittal plane was measured as from 25.5˚ at C2 to 40˚ at C8 segments. The results of this anatomico-radiologic study of the cervical dorsal horn suggest that preoperative MRI could be useful to design the surgical approach to this structure, as performed during cervical microsurgical drezotomy (DREZ = dorsal root entry zone) for the treatment of selected cases of chronic pain or disabling spasticity in the upper limbs.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s00276-000-0081-8
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  • 23
    Electronic Resource
    Electronic Resource
    Pneumocolography and virtual colonoscopy: its clinical place and development (2000)
    Springer
    Techniques in coloproctology 4 (2000), S. 129-131 
    Details
    ISSN: 1128-045X
    Keywords: Key words Colonscopy ; CT scanning ; Magnetic resonance imaging ; Virtual colonoscopy ; Pneumocolography
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Colonoscopy is an invasive technique, frequently incomplete and often poorly tolerated in elderly patients. New, less invasive modalities are being developed to diagnose moderate-sized adenomatous polyps and colorectal caners which involve pneumo- or hydrocolography with high-resolution surface imaging, either by CT or MR scanning. This approach has recently been supplemented by complex image post-processing to provide a form of virtual colonoscopy which takes account of projected colonic direction and which can map for mucosal anomalies. It remains to be seen how sensitive these newer techniques are and whether defined algorithms for colonic representation can be agreed upon which will prove both accurate and cost-effective both in symptomatic and screening populations.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s101510070002
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  • 24
    Electronic Resource
    Electronic Resource
    Is there a brainstem generator of chronic daily headache? (2000)
    Springer
    The journal of headache and pain 1 (2000), S. 67-71 
    Details
    ISSN: 1129-2377
    Keywords: Key words Chronic daily headache ; Migraine ; Magnetic resonance imaging ; Red nucleus ; Substantia nigra ; Image processing
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Using BOLD-fMRI we have previously documented activation of the red nucleus (RN) and substantia nigra (SN) during spontaneously and visually activated migraine headache. These observations prompted us to study brainstem function in chronic daily headache patients using high-resolution magnetic resonance imaging (MRI) techniques. Seventeen chronic daily headache (CDH) patients, ten episodic migraine (EM) patients and fifteen controls (N) were imaged with a 3 tesla MRI system. For each subject, the relaxation rates R2, R2* and R2' were obtained for RN and SN. There was a significant decrease in R2' and R2* values for RN and SN in CDH compared to N and EM groups (p 〈 0.05), but no significant difference between the N and EM groups. A decrease in R2' and R2* indicates reduced deoxyhemoglobin and hence persistent activation of the RN and SN in CDH patients most likely secondary to ongoing headache at the time of study. The imaging data provide objective evidence of disturbed central nervous system function in CDH.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s101940070045
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  • 25
    Electronic Resource
    Electronic Resource
    Subependymoma of the lateral ventricles (2000)
    Springer
    Neurosurgical review 23 (2000), S. 98-103 
    Details
    ISSN: 1437-2320
    Keywords: Key words Computed tomography ; Magnetic resonance imaging ; Lateral ventricle ; Subependymoma
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract  Four subependymomas of the lateral ventricle were reviewed with regard to clinical presentation, neuroimaging features, treatment, histopathological features, and long-term follow-up. There were two male and two female patients ranging in age from 27 to 60 years (mean 48.3 years). While two patients presented with symptoms and signs of raised intracranial pressure, two others were found incidentally during neuroimaging investigations to have intraventricular tumors. Neuroimaging characteristics of these tumors included no paraventricular extension, iso- or hypodensity with minimal enhancement on computerized tomography (CT), or iso- or hypointensity on T1-weighted and hyperintensity on T2-weighted magnetic resonance images (MRI). The usual finding on MRI was of no or scarce contrast enhancement, but one case showed heterogeneous enhancement. Three patients underwent total resection of the tumor and one underwent partial resection. No patients received postoperative radiation therapy. All patients have been doing well 4.8 to 15.4 years (mean 8.8 years), after surgery. Although there are no absolutely specific features to distinguish these tumors from other intraventricular tumors preoperatively, subependymoma should be kept in mind for differential diagnosis, as this tumor may safely be removed without sacrificing contiguous normal tissue and with good long-term results.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s101430050008
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  • 26
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    Electronic Resource
    Experience, Awareness and Consciousness:Suggestions for Definitions as Offered by an Evolutionary Approach (2000)
    Springer
    Foundations of science 5 (2000), S. 429-456 
    Details
    ISSN: 1572-8471
    Keywords: awareness ; reflexive awareness and consciousness ; evolution ; experience and pattern matching ; symbolic language
    Source: Springer Online Journal Archives 1860-2000
    Topics: Natural Sciences in General
    Notes: Abstract An evolutionary point of view is proposed to make more appropriate distinctions between experience, awareness and consciousness. Experience can be defined as a characteristic linked closely to specific pattern matching, a characteristic already apparent at the molecular level at least. Awareness can be regarded as the special experience of one or more central, final modules in the animal neuronal brain. Awareness is what experience is to animals. Finally, consciousness could be defined as reflexive awareness. The ability for reflexive awareness is distinctly different from animal and human awareness and depends upon the availability of a separate frame of reference, as provided by symbolic language. As such, words have made reflexive awareness – a specific and infrequent form of awareness – possible. Conciousness might be defined as the experience evoked by considering, i.e. thinking about experiences themselves. If there is a hard problem of explaining consciousness, than this actually must be considered as the hard problem already met when trying to explain basic experience, since its nature remains elusive.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1011371811027
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  • 27
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    Electronic Resource
    Arbitrariness in nature: synergetics and evolutionary laws of prohibition (2000)
    Springer
    Journal for general philosophy of science 31 (2000), S. 57-73 
    Details
    ISSN: 1572-8587
    Keywords: complex systems ; evolution ; nonlinearity ; pre-determination ; self-organization ; soft management ; structure-attractors ; synergetics
    Source: Springer Online Journal Archives 1860-2000
    Topics: Philosophy , Nature of Science, Research, Systems of Higher Education, Museum Science
    Notes: Abstract The philosophical consequences of synergetics, the interdisciplinary theory of evolution and self-organization of complex systems, are being drawn in the paper. The idea of discreteness of evolutionary paths is in the focus of attention. Although the future is open, and there are many alternative evolutionary paths for complex systems, not any arbitrary (either conceivable or desirable) evolutionary path is feasible in a given system. There are discrete spectra of possible evolutionary paths which are determined exclusively by inner properties of the corresponding systems. Synergetics allows us to reveal general laws of self-organization and, therefore, certain limits of arbitrariness of nature in choosing possible paths of evolution as well as in constructing of a complex evolutionary whole. A comparative analysis between the modern synergetic notions and a few ideas of the Western philosophy (F. Nietzsche, N. Hartmann, M. Heidegger) and of the Eastern teachings (Taoism, Buddhism) is made.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1008369525041
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  • 28
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    Electronic Resource
    Morality De-Kanted or the Biological Roots of Moral Behavior (2000)
    Springer
    International journal of value-based management 13 (2000), S. 297-308 
    Details
    ISSN: 1572-8528
    Keywords: morality ; moral systems ; behavior ; evolution ; adaptation ; natural selection ; altruism ; reciprocal altruism ; fitness ; reciprocity
    Source: Springer Online Journal Archives 1860-2000
    Topics: Economics
    Notes: Abstract The ethical and moral behavior of Homo sapiens is no longer the exclusive domain of religion and philosophy because we recognize that such behavior affects the reproductive success of individuals within the species. We are a social species and therefore our survival is influenced by our capacity for cooperation and our willingness to take risks for kin. Emotions, some of which are found in other species, help to mediate our altruistic behavior. The reproductive benefits of helping kin, especially offspring, are readily seen. Helping non-kin can be beneficial if individuals can differentiate between ‘reciprocators’ and ‘non-reciprocators’ and direct altruistic behavior toward reciprocators. Also, if third parties are favorably impressed by observing altruistic behavior, the rewards need not come from the recipient of the altruistic behavior.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1007897311267
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  • 29
    Electronic Resource
    Electronic Resource
    Preoperative staging of rectal cancer (2000)
    Springer
    International journal of colorectal disease 15 (2000), S. 9-20 
    Details
    ISSN: 1432-1262
    Keywords: Keywords Rectal cancer staging ; Computed tomography ; Endorectal sonography ; Magnetic resonance imaging ; Systematic review
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract  With the widespread introduction of preoperative radiotherapy for rectal cancer and the development of transanal endoscopic microsurgery for selected early lesions, preoperative radiological staging of these tumours has taken on increasing importance. This study is a systematic review to evaluate computed tomography (CT), endorectal sonography (ES) and magnetic resonance imaging (MRI) as preoperative staging modalities in rectal cancer. A Medline-based search identifying studies using CT, ES, or MRI in preoperative staging of rectal cancer between 1980 and 1998 was undertaken. The list of papers was supplemented by extensive cross-checking of citation lists. Studies were included if they met predetermined criteria. Data from the accepted studies were entered into pooled tables comparing radiological and pathological staging results for each modality both in determining bowel wall penetration and involvement of lymph nodes. Accuracy, sensitivity, specificity, positive predictive value, negative predictive value, positive likelihood ratio and negative likelihood ratio were determined for the pooled results. Eighty-three studies from 78 papers including 4897 patients met the inclusion criteria. In determining the wall penetration of the tumour the values for sensitivity for CT, ES, MRI and MRI with endorectal coil were 78%, 93%, 86% and 89%; for specificity 63%, 78%, 77% and 79%; and for accuracy 73%, 87%, 82% and 84%, respectively. In determining the nodal involvement by tumour the sensitivity values for CT, ES, MRI and MRI with endorectal coil 52%, 71%, 65% and 82%; for specificity 78%, 76%, 80% and 83%; and for accuracy 66%, 74%, 74% and 82%, respectively. MRI with an endorectal coil is the single investigation that most accurately predicts pathological stage in rectal cancer.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s003840050002
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  • 30
    Electronic Resource
    Electronic Resource
    Risiken bei Sectio caesarea und vaginaler Geburt (2000)
    Springer
    Der Gynäkologe 33 (2000), S. 872-881 
    Details
    ISSN: 1433-0393
    Keywords: Schlüsselwörter Sectio caesarea ; Notsectio ; Geburt ; Schwangerschaft ; Müttersterblichkeit ; Letalität ; Morbidität ; Komplikationen ; Keywords Cesarean section ; Emergency cesarean ; Birth ; Pregnancy ; Maternal mortality ; Lethality ; Morbidity ; Complications
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Abstract The rate of cesarean section now exceeds 20% and continues to increase. This effect is enhanced by the almost negligible surgery-dependent risks. Maternal mortality in Central Europe has evidenced a sharp decline to approximately 10–20 deaths per 100,000 live births. Cesarean mortality due solely to surgical and/or anesthesiological intervention has also decreased considerably in the past 20 years. Nevertheless, vaginal birth entails a lower risk per se for the mother. Thus, the letality rate for vaginal birth is lower by a factor of 5–10 excluding pregnancy-dependent risks. Primary cesarean section exhibits a 1.7-fold lower risk of letality in comparison to secondary cesarean section. The main causes of death continue to be hemorrhages and thromboembolism. The mortality rate due to cesarean section continues to remain higher than that for vaginal birth. The rate of severe blood loss is significantly higher. The risk of deep vein thrombosis is about ten times greater than for vaginal birth with concomitantly increased risk for a pulmonary embolism as well as post-thrombotic syndrome. Perioperative prophylactic treatment with antibiotics was able to reduce the morbidity rate due to infection by more than 50%, but endometritis and wound infection continues to occur 10–15 times more frequently than during vaginal birth. In summary, maternal risk during pregnancy and birth – be it vaginal or cesarean – has been further reduced considerably. Nevertheless, cesarean section constitutes a surgical intervention entailing significantly higher rates of morbidity and mortality in comparison to vaginal birth.
    Notes: Zusammenfassung Die Sectiorate hat die 20%-Grenze überschritten und steigt unvermindert an. Begünstigt wird dieser Effekt durch die schon fast vernachlässigbaren operationsbedingten Risiken; die maternale Mortalität verzeichnet in Mitteleuropa einen starken Rückgang auf ca. 10–20 Todesfälle bezogen auf 100.000 Lebendgeburten. Auch die reine operations- bzw. anästhesiebedingte Sectioletalität hat sich in den letzten 20 Jahren deutlich vermindert. Nichtsdestotrotz geht die vaginale Geburt mit einem für die Mutter per se niedrigeren Risiko einher. So liegt die Letalität bei vaginaler Geburt um den Faktor 5–10 niedriger bei Ausschluss gestationsbedingter Risiken. Die primäre Sectio weist gegenüber der sekundären Sectio ein 1,7fach vermindertes Letalitätsrisiko auf. Haupttodesursachen sind weiterhin die Hämorrhagie und Thrombembolien. Aber auch die sectiobedingte Morbidität liegt weiterhin über der einer vaginalen Geburt. Die Rate an stärkeren Blutverlusten ist signifikant höher. Das Risiko einer tiefen Venenthrombose liegt rund 10fach über dem einer vaginalen Geburt mit ebenfalls erhöhtem Risiko für eine Lungenembolie sowie einem postthrombotischen Syndrom. Zwar konnte durch die perioperative Antibiotikaprophylaxe die Infektmorbidität um mehr als 50% gesenkt werden, doch ist die Endometritis und die Wundinfektion nach Sectio noch rund 10- bis 15-mal häufiger als bei vaginaler Geburt.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s001290050656
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  • 31
    Electronic Resource
    Electronic Resource
    Doppelbilder durch Doppel-IOL (2000)
    Springer
    Der Ophthalmologe 97 (2000), S. 781-783 
    Details
    ISSN: 1433-0423
    Keywords: Schlüsselwörter Katarakt-Chirurgie ; Komplikationen ; IOL-Luxation ; Doppel IOL ; Doppelbilder ; Keywords Cataract surgery ; Complications ; Intraocular lens dislocation ; Double intraocular lens implant ; Double vision
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Abstract An 80-year-old man had intraoperative loss of an intraocular lens (IOL) in the vitreous and simultaneous implantation of an anterior chamber lens. For the first 3 years his course was uncomplicated, but after this time he noted monocular double vision. The IOL in the vitreous had moved into the optic axis of the eye. The case presented here underlines the possibility of complications occurring even years after surgery due to an IOL left behind in the vitreous. The double IOL implant technique should be reserved for very few selected indications.
    Notes: Zusammenfassung Bei einem 80-jährigen Patienten war nach intraoperativer Luxation einer intraokularen Linse (IOL) in den Glaskörper (GK) eine zweite IOL in die Vorderkammer implantiert worden. Nach zunächst komplikationslosem Verlauf, bemerkte der Patient 3 Jahre später monokulare Doppelbilder, offensichtlich durch eine Mobilisierung der IOL im GK in die optische Achse. Der beschriebene Fall zeigt, dass Komplikationen einer in den GK luxierten IOL auch nach längerer Zeit noch auftreten können. Die Doppelimplantationstechnik sollte ganz wenigen Ausnahmefällen vorbehalten werden.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s003470070028
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  • 32
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    Electronic Resource
    Bilaterale simultane LASIK Pro und Kontra (2000)
    Springer
    Der Ophthalmologe 97 (2000), S. 881-884 
    Details
    ISSN: 1433-0423
    Keywords: Schlüsselwörter LASIK ; einzeitige und zweizeitige Operation ; Kostenaspekt ; Komplikationen ; Keywords LASIK ; Simultaneous and sequential operation ; Cost effectiveness ; Complications
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Abstract Until recently simultaneous bilateral laser in situ keratomileusis (LASIK) was regarded as contraindicated in Germany. However, the procedure was sporadically performed, because it offers patient comfort and is more cost effective than sequential LASIK. Even though the complication rate is below the calculated rate of 0.01%, bilateral complications may have catastrophic effects on the patient. In addition, there is the theoretical disadvantage that the results from the first eye cannot be used for the second eye. However, this effect has yet to be clinically proven.
    Notes: Zusammenfassung Seit September 2000 wird in Deutschland die bilaterale simultane Laser-in-situ-Keratomileusis (LASIK) nicht mehr als ungerechtfertigt angesehen. Bereits zuvor wurde sie vereinzelt durchgeführt, da sie dem Patienten einen höheren Komfort bietet und kostengünstiger ist als ein zweizeitiges Vorgehen. Auch wenn die Komplikationsrate sehr gering ist und sicherlich unter der rechnerischen Komplikationsrate von 0,01% liegt, können beidseitige Komplikationen katastrophale Auswirkungen für den Patienten haben. Zudem besteht der theoretische Nachteil der schlechteren Vorhersagbarkeit für das zweitbehandelte Auge. Dieser Effekt konnte bisher klinisch nicht nachgewiesen werden.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s003470070014
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  • 33
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    Electronic Resource
    Operative Behandlung von Verletzungen des thorakolumbalen Übergangs Teil 2: Operation und röntgenologische Befunde (2000)
    Springer
    Der Unfallchirurg 103 (2000), S. 1032-1047 
    Details
    ISSN: 1433-044X
    Keywords: Schlüsselwörter Arbeitsgemeinschaft “Wirbelsäule” der DGU ; Prospektive multizentrische Studie ; Thorakolumbale Wirbelsäule ; Wirbelsäulenverletzung ; Operative Behandlung ; Operative Zugänge zur Wirbelsäule ; Dorsale Stabilisierung ; Kombinierte Stabilisierung ; Ventrale Stabilisierung ; Fusionsoperation ; Fixateur interne ; Spinalkanaldekompression ; Komplikationen ; Schraubenfehllagen ; Grund-Deckplatten-Winkel ; Segmentale Kyphose ; Körperwinkel ; Sagittaler Index ; CT der Wirbelsäule ; Keywords Working group “spine” of the German Trauma Society, prospective multicenter study ; Thoracolumbar spine ; Fractures and dislocations of the spine ; Injuries of the spine ; Operative treatment ; Posterior surgery ; Combined surgery ; Anterior surgery ; Spinal fusion ; Internal fixator ; Decompression of the spinal canal ; Complications ; Misplaced pedicle screws ; Segmental kyphosis angle ; Wedge angle ; Sagittal index ; Computertomography of the spine
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Summary The authors report on a prospective multicenter study with regard to the operative treatment of acute fractures and dislocations of the thoracolumbar spine (T10–L2). The study should analyze the operative methods currently used and determine the results in a large representative collective. This investigation was realized by the working group “spine” of the German Trauma Society. Between September 1994 and December 1996, 682 patients treated in 18 different traumatology centers in Germany and Austria were included. Part 2 describes the details of the operative methods and measured data in standard radiographs and CT scans of the spine. Of the patients, 448 (65.7%) were treated with posterior, 197 (28.9%) with combined posterior-anterior, and 37 (5.4%) with anterior surgery alone. In 72% of the posterior operations, the instrumentation was combined with transpedicular bone grafting. The combined procedures were performed as one-stage operations in 38.1%. A significantly longer average operative time (4:14 h) was noted in combined cases compared to the posterior (P〈0.001) or anterior (P〈0.05) procedures. The average blood loss was comparable in both posterior and anterior groups. During combined surgery the blood loss was significantly higher (P〈0.001; P〈0.05). The longest intraoperative fluoroscopy time (average 4:08 min) was noticed in posterior surgery with a significant difference compared to the anterior group. In almost every case a “Fixateur interne” (eight different types of internal fixators) was used for posterior stabilization. For anterior instrumentation, fixed angle implants (plate or rod systems) were mainly preferred (n=22) compared to non-fixed angle plate systems (n=12). A decompression of the spinal canal (indirect by reduction or direct by surgical means) was performed in 70.8% of the neurologically intact patients (Frankel/ASIA E) and in 82.6% of those with neurologic deficit (Frankel/ASIA grade A–D). An intraoperative myelography was added in 22% of all patients. The authors found a significant correlation between the amount of canal compromise in preoperative CT scans and the neurologic deficit in Frankel/ASIA grades. The wedge angle and sagittal index measured on lateral radiographs improved from −17.0° and 0.63 (preoperative) to −6.3° and 0.86 (postoperative). A significantly (P〈0.01) stronger deformity was noted preoperatively in the combined group compared to the posterior one. The segmental kyphosis angle improved by 11.3° (8.8° with inclusion of the two adjacent intervertebral disc spaces). A significantly better operative correction of the kyphotic deformity was found in the combined group. In 101 (14.8%) patients, intra- or postoperative complications were noticed, 41 (6.0%) required reoperation. There was no significant difference between the three treatment groups. Of the 2264 pedicle screws, 139 (6.1%) were found to be misplaced. This number included all screws, which were judged to be not placed in an optimal direction or location. In seven (1.0%) patients the false placement of screws was judged as a complication, four (0.6%) of them required revision. The multicenter study determines the actual incidence of thoracolumbar fractures and dislocations with associated injuries and describes the current standard of operative treatment. The efforts and prospects of different surgical methods could be demonstrated considering certain related risks. The follow-up of the population is still in progress and the late results remain for future publication.
    Notes: Zusammenfassung Die Autoren berichten über eine prospektive multizentrische Studie zur operativen Behandlung frischer Verletzungen des thorakolumbalen Übergangs (Th10 bis L2). Die Studie soll die derzeitigen Behandlungsmethoden und ihre Ergebnisse an einem großen Kollektiv repräsentativ analysieren und wird von der Arbeitsgemeinschaft “Wirbelsäule” der Deutschen Gesellschaft für Unfallchirurgie (DGU) erarbeitet. An 18 unfallchirurgischen Kliniken in Deutschland und Österreich wurden von September 1994 bis Dezember 1996 insgesamt 682 Patienten prospektiv erfasst. Die Nachuntersuchung der Patienten ist z. Z. noch nicht abgeschlossen. Im Teil 1 (Epidemiologie) wurden Studiendesign und epidemiologische Daten des Kollektivs dargestellt. Der vorliegende Teil 2 schildert die Details der Operationen sowie Messdaten der konventionellen Röntgenuntersuchungen und Computertomographien (CT); 448 (65,7%) Patienten wurden von dorsal, 197 (28,9%) kombiniert dorsoventral und 37 (5,4%) isoliert von ventral operiert; 72% der 448 von dorsal stabilisierten Patienten erhielten eine transpedikuläre Spongiosaplastik. Die kombinierten dorsoventralen Eingriffe wurden bei 75 (38,1%) Verletzten einzeitig und bei 122 (61,9%) zweizeitig durchgeführt. Die durchschnittliche Operationszeit war bei kombiniertem Eingriff mit 4:14 h signifikant länger als bei dorsalem (p〈0,001) oder ventralem (p〈0,05). Der durchschnittliche Blutverlust war bei dorsalem und ventralen Vorgehen vergleichbar hoch und signifikant geringer als bei kombinierter Operation (p〈0,001 bzw 〈0,05). Die intraoperative Durchleuchtungszeit war mit 4:08 min bei dorsaler Behandlung am längsten und signifikant (p〈0,005) länger als bei ventraler. Als dorsales Implantat wurde fast ausnahmslos ein Fixateur interne verwendet (8 verschiedene Modelle). Bei den ventralen Eingriffen kamen überwiegend winkelstabile Platten- oder Stabsysteme (n=22) und seltener winkelinstabile Platten (n=12) zum Einsatz. Der Spinalkanal wurde bei 82,6% der Patienten mit neurologischem Defizit und bei 70,8% derjenigen ohne Ausfallserscheinungen direkt mit Eröffnung des Spinalkanals oder indirekt mit Hilfe des Instrumentariums dekomprimiert. Eine intraoperative Myelographie wurde bei 22% der Patienten für notwendig gehalten. Wir fanden eine statistisch signifikante Korrelation zwischen dem Ausmaß der neurologischen Beeinträchtigung und der Einengung des Spinalkanals im präoperativen CT. Der im seitlichen Röntgenbild ermittelte Körperwinkel des betroffenen Wirbels und der sagittale Index betrugen im Gesamtkollektiv präoperativ im Mittel −17,0° und 0,63; postoperativ lagen die Werte bei −6,3° und 0,86. Eine signifikant (p〈0,01) stärkere Verformung des Wirbelkörpers bestand präoperativ in der kombinierten gegenüber der dorsalen Gruppe. Der segmentale Kyphosewinkel GDW 1 wurde von prä- zu postoperativ durchschnittlich um 11,3° und der GDW 2 um 8,8° lordosiert. Die signifikant (p〈0,005) größte Korrektur wurde bei den kombiniert Behandelten erzielt. Bei insgesamt 101 (14,8%) Patienten wurden intra- oder postoperative Komplikationen beobachtet, davon 41 (6,0%) revisionspflichtige. Die 3 Behandlungsgruppen wiesen unterschiedliche Komplikationsraten auf, der Unterschied war jedoch nicht signifikant (χ2-Test). Die Rate von Fehllagen transpedikulärer Schrauben betrug 139 von 2264 (6,1%) Schrauben; jede nicht optimal plazierte Schraube wurde dabei als Fehllage dokumentiert. Bei 7 (1,0%) Patienten wurde eine Schraubenfehllage als Komplikation gewertet und 4 (0,6%) von diesen wurden deswegen revidiert. Die Sammelstudie ermöglicht eine aktuelle Standortbestimmung für Verletzungshäufigkeiten und -muster sowie die verschiedenen, heute angewendeten Operationsmethoden. Mit der multizentrischen Studie konnten erstmals der operative Aufwand sowie Möglichkeiten und Risiken der verschiedenen Behandlungsformen dargestellt werden. Weiterführende Ergebnisse sind von den noch andauernden klinischen und radiologischen Nachuntersuchungen zu erwarten.
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    URL: http://dx.doi.org/10.1007/s001130050667
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  • 34
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    Electronic Resource
    Zur Implantatpositionierung bei der Epiphysiolysis capitis femoris Folgen des schlechten Verlaufs und Konsequenzen (2000)
    Springer
    Der Unfallchirurg 103 (2000), S. 820-825 
    Details
    ISSN: 1433-044X
    Keywords: Schlüsselwörter Implantatpositionierung ; Epiphysiolysis capitis femoris ; Komplikationen ; Behandlungskonsequenzen ; Keywords Implant position ; Slipped capital femoral epiphysis ; Complications ; Consequences of treatment
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Abstract Which consequences can be ascribed to the intraarticular position of devices in the operative treatment of a slipped capital femoral epiphysis? Which steps are to define as a standard of a careful procedure? The clinical and radiological results of five cases of a pin or nail penetration after the operative treatment of a slipped capital femoral epiphysis are described, a possible connection of causalities is investigated. The intraarticular position of devices in most cases goes along with an unfortunate clinical outcome and leads to a higher risk of developing chondrolysis. Because of the radiologic overprojection with the femoral head it is possible to oversee the malposition of the pin. Any operative treatment of a slipped capital femoral epiphysis requires a careful intraoperative X-ray examination combined with documentation. With this procedure the bad results of an intraarticular implant position must be ascribed to the reminding risk of a fateful development.
    Notes: Zusammenfassung Welche Folgen bei der operativen Behandlung der Epiphysioslysis capitis femoris sind einer intraartikulären Implantatlage zuzurechnen, und welche Maßnahmen sind als Sorgfaltsmaßstab zu definieren? Anhand von 5 Fällen mit intraartikulärer Implantatlage nach der operativen Behandlung einer Epiphysiolysis capitis femoris werden die klinischen und radiologischen Folgen aufgezeigt und ein möglicher Kausalzusammenhang anhand der Literatur untersucht. Die intraartikuläre Implantatlage geht meistens mit einem ungünstigen klinischen Ergebnis einher und führt zu einer erheblichen Risikoerhöhung für das Auftreten einer Chondrolyse. Durch Überlagerung mit dem Femurkopf kann sich die Fehlposition des Implantates der radiologischen Diagnostik entziehen. Jede operative Behandlung der Epiphysiolysis capitis femoris erfordert eine sorgfältige intraoperative Durchleuchtungskontrolle, eine entsprechende Dokumentation ist zu empfehlen. Bei einem solchen Vorgehen sind die Folgen einer intraartikulären Position des Implantats als Restrisiko dem schicksalshaften Verlauf zuzurechnen.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s001130050627
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  • 35
    Electronic Resource
    Electronic Resource
    Behandlungsergebnisse nach primärer und sekundärer Radiusköpfchenresektion (2000)
    Springer
    Der Unfallchirurg 103 (2000), S. 437-443 
    Details
    ISSN: 1433-044X
    Keywords: Schlüsselwörter Radiusköpfchenfraktur ; Primäre Resektion ; Osteosynthese ; Sekundäre Resektion ; Komplikationen ; Keywords Radial head fracture ; Primary resection ; Osteosynthesis ; Secondary resection ; Complications
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Summary Apart from comminuted fractures of the radial head the indication for resection of the radial head is discussed controversially. To evaluate our own results, the hospital notes of 113 patients treated between 1.1.1984–31.12.1994 in our clinic by posttraumatic primary or secondary radial head resection were examined retrospectively. 79 patients were controlled by clinical and radiological examination with an average follow-up of 37,8 months. We examined at 46 patients the influence of additional lesions of the elbow joint on the functional outcome. In 33 patients follow up was done with special regard to the time of resection. Poor results due to the score from Radin and Riseborough especially followed secondary radial head resection (〉14 days after trauma) and in case of additional elbow lesions. We could not observe problems of the wrist joint after radial head resection as described by other authors. According to our own experience primary resection is recommended in case of doubtful reconstruction of the radial head. In these fracture types radial head resection should not be seen as an alternative treatment because of the worse results following secondary resection.
    Notes: Zusammenfassung Abgesehen von Trümmerfrakturen wird die Indikationsstellung zur Radiusköpfchenresektion kontrovers diskutiert. Zur Evaluation eigener Ergebnisse führten wir eine retrospektive Untersuchung der 113 Patienten durch, die von 1.1.1984–31.12.1994 mittels primärer oder sekundärer posttraumatischer Radiusköpfchenresektion behandelt wurden. Nach einem durchschnittlichen postoperativen Intervall von 37,8 Monaten konnten insgesamt 79 Patienten klinisch und radiologisch nachuntersucht werden. Bei 46 Patienten wurde die Auswirkung der Begleitverletzungen auf das Endergebnis untersucht. Bei 33 Patienten erfolgte die Nachuntersuchung unter besonderer Berücksichtigung des Resektionszeitpunktes. Schlechte Behandlungsergebnisse nach den Kriterien des Scores von Radin und Riseborough resultierten besonders häufig nach sekundärer Radiusköpfchenresektion (〉 14 Tage nach Trauma) und bei Begleitverletzungen des Ellenbogengelenks. Die Berichte anderer Autoren über negative Langzeitfolgen auf das Handgelenk können wir nicht bestätigen. Nach unseren Erfahrungen sollte daher bei zweifelhaften Rekonstruktionsversuchen die primäre Radiusköpfchenresektion bevorzugt werden, die aufgrund der eindeutig schlechteren Resultate nach sekundärer Resektion nicht als Option für mißlungene Erhaltungsversuche des Radiusköpfchens betrachtet werden darf.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s001130050563
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  • 36
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    Electronic Resource
    Perforation eines mucocelenartig transformierten Hartmannstumpfs (2000)
    Springer
    Der Chirurg 71 (2000), S. 572-574 
    Details
    ISSN: 1433-0385
    Keywords: Keywords: Mucocele ; Ileostomy ; Complications ; Hartmann procedure. ; Schlüsselwörter: Mucocele ; Ileostoma ; Komplikationen ; Hartmannstumpf.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung. Wir berichten über eine 53 jährige Patientin, bei der 22 Jahre nach Anlage eines Ileostomas wegen eines Morbus Crohn eine Stenose im distalen Colonsegment (Hartmannstumpf) zu einer mucocelenartigen Transformation und nachfolgenden Ruptur geführt hat. Über die Ruptur eines stillgelegten Colonabschnitts nach Anlage eines Ileostomas wurde bisher offenbar noch nicht berichtet.
    Notes: Abstract. We report an unusual complication in a 53-year-old woman following ileostomy for Crohn's disease 22 years previously. A stenosis of the distal colonic segment was the reason for the formation and subsequent rupture of a huge colonic mucocele. To our knowledge, this is the first report of a ruptured mucocele of colonic origin after ileostomy.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s001040050859
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  • 37
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    Electronic Resource
    Patient reports of complications of bone marrow transplantation (2000)
    Springer
    Supportive care in cancer 8 (2000), S. 33-39 
    Details
    ISSN: 1433-7339
    Keywords: Key words Marrow transplantation ; Complications ; Oral mucositis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract  In recent years, significant improvements have been made in the management of neutropenia and thrombocytopenia and other potentially life-threatening complications of ablative chemotherapy. While these complications are of particular concern to physicians, patients receiving ablative therapy for bone marrow or blood stem cell transplants are often troubled by other side effects such as nausea, vomiting, diarrhea and mouth sores. The purpose of the study was to gain a better understanding of patients' experiences while undergoing a transplant. The same professional medical interviewer conducted in-depth interviews with 38 subjects (10 men, 28 women; mean age 46.9 years) who had received ablative therapy for bone marrow and/or peripheral blood stem cell transplants. Participants were consecutively identified through physician and patient referrals, cancer and BMT patient support groups, and newspaper advertisements. Twenty-eight patients (74%) received autologous stem cell transplants and 10 patients (26%) received allogeneic transplants. Participants reported mouth sores, nausea and vomiting, diarrhea, and fatigue as the most troubling side effects of their transplants. Mouth sores were selected as the single most debilitating side effect (42%), followed by nausea and vomiting (13%). Many patients mentioned that mouth sores made it difficult or impossible to eat (n=23), swallow (n=21), drink (n=17), and/or talk (n=8). Twenty patients reported pain in the mouth, throat, and/or esophagus. Two-thirds (66%) of patients reported receiving opioid analgesics, most frequently morphine, to relieve oral pain. For many, opioids caused incapacitating side effects, including hallucinations, a feeling of loss of control and a decrease in mental acuity. Patients receiving ablative chemotherapy identify oral mucositis as a significant cause of suffering and morbidity. Effective interventions to alleviate this complication are urgently needed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s005209900095
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  • 38
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    Electronic Resource
    Heilungsverlauf und Komplikationen nach Augenmuskeloperationen (2000)
    Springer
    Der Ophthalmologe 97 (2000), S. 22-26 
    Details
    ISSN: 1433-0423
    Keywords: Schlüsselwörter Augenmuskeloperation ; Komplikationen ; Heilungsverlauf ; Key words Eye muscle surgery ; Complications ; Healing process
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Background: Varying reports on the incidence of operative and postoperative complications following eye muscle surgery have been published. The purpose of this study was to quantify complications after various types of eye muscle surgery as well as minor pathological changes of the anterior and posterior segment. Patients and methods: This prospective study included all patients who underwent eye muscle surgery at the Department of Strabismology and Neuroophthalmology, Giessen, from January to May 1998. Five hundred eyes of 377 patients aged 2–82 years were included. The spectrum of procedures comprised: recessions, resections, tucks, R&R procedures, transpositions, bimedial retroequatorial myopexies, and revisions of rectus and oblique muscles. All patients were examined 1 day preoperatively and 1 day, 1 week, and 3 months postoperatively. Any complications and even minor pathological changes of the anterior and posterior segment were documented. Some changes were assessed by means of a score (0–3). Results: One day postoperatively, 30% of eyes had inflammatory pseudoptosis, most of them mild. Conjunctival swelling and injection were frequently mild and moderate, after 1 week mostly mild. Conjunctival irritation was more pronounced following resection than tucking. Punctate epithelial keratopathy was noted in 1.6% of cases (first postoperative day), dellen in 4.3% (first postoperative week). Three months postoperatively, 14.3% of eyes had biomicroscopically visible conjunctival folds and 91.3% had minimal conjunctival scars. None of the patients had a scleral perforation or other serious complication. Conclusions: Eye muscle surgery rarely entails complications. Revisions due to organic pathological changes are extremely rare. Possible development of dellen requires check-up 4–7 days postoperatively. Tucking of rectus muscles causes less conjunctival irritation than resection.
    Notes: Hintergrund: Zur Inzidenz operativer und postoperativer Komplikationen bei Augenmuskeloperationen liegen unterschiedliche Mitteilungen vor. Ziel der vorliegenden Studie war es, sowohl Komplikationen als auch geringfügige pathologische Veränderungen des vorderen und hinteren Augenabschnittes nach unterschiedlichen Augenmuskeloperationen zu quantifizieren. Patienten und Methode: Es wurden prospektiv alle Patienten erfaßt, bei denen im Zeitraum Januar bis Mai 1998 an der Augenklinik für Schielbehandlung und Neuroophthalmologie Gießen eine Augenmuskeloperation durchgeführt wurde. In die Studie konnten 500 Augen von 377 Patienten im Alter von 2 bis 82 Jahren einbezogen werden. Das Spektrum der durchgeführten Eingriffe umfaßte Rücklagerungen, Resektionen, Faltungen, kombinierte Operationen, Transpositionen, Fadenoperationen und Revisionsoperationen an allen geraden und schrägen Augenmuskeln. Die Patienten wurden am Tag vor der Operation und postoperativ am ersten Tag, nach einer Woche und nach drei Monaten untersucht. Alle Komplikationen des vorderen und hinteren Augenabschnittes wurden dokumentiert und quantitativ erfaßt, teilweise erfolgte eine Gradeinteilung (0–3). Ergebnisse: Am ersten postoperativen Tag war bei 30% der Augen eine zumeist diskrete Lidschwellung auffällig. Die Bindehautschwellung und -injektion waren meist gering bis mäßig, nach einer Woche häufig nur noch gering. Der Reizzustand der Bindehaut war geringer nach Faltung als nach Resektion eines horizontalen M. rectus. Bei den Hornhautveränderungen dominierte am ersten postoperativen Tag eine Epitheliopathie (1,6%), nach 1 Woche standen diskrete Fuchs'sche Dellen (4,3%) im Vordergrund, die unter lokaler Therapie abheilten. Mikroskopisch erkennbare Bindehautfalten wurden überwiegend zur 3-Monats-Kontrolle (14,3%) dokumentiert, ebenso Bindehautnarben (91,3%), die i.d.R. sehr gering waren. Perforationen oder schwerwiegende Komplikationen kamen nicht vor. Schlußfolgerungen: Eine Augenmuskeloperation ist ein komplikationsarmer Eingriff, der nur selten einen erneuten Eingriff wegen organischer pathologischer Veränderungen erfordert. Zur Erkennung von Fuchs'schen Dellen ist eine Kontrolluntersuchung 4–7 Tage postoperativ wichtig. Faltung eines horizontalen M. rectus führt zu weniger Bindehautreiz als Resektion.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s003470050005
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    Electronic Resource
    Okuläres vernarbendes Pemphigoid Retrospektive Analyse von Risikofaktoren und Komplikationen (2000)
    Springer
    Der Ophthalmologe 97 (2000), S. 113-120 
    Details
    ISSN: 1433-0423
    Keywords: Schlüsselwörter Okuläres vernarbendes Pemphigoid ; Therapie ; Komplikationen ; Glaukom ; Key words Ocular cicatricial pemphigoid ; Therapy ; Complications ; Glaucoma
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Summary Cicatricial pemphigoid (CP) is a rare autoimmune disease characterized by subepidermal blistering and progressive cicatrization affecting the skin and mucosa. Ocular involvement occurs in approximately 70% of the patients. Methods: The course of the disease, complications and putative risk factors in patients with ocular cicatricial pemphigoid (OCP) treated at the Departments of Ophthalmology and Dermatology were analyzed retrospectively from 1986 to 1998. Results: Eighteen of 28 patients (64%) with CP demonstrated ocular involvement. The mean age of patients with OCP was 73 years; 61% were female. At the time of referral to our hospital, all patients had reached advanced stage III (83%) or IV (17%) of OCP. In 38% of patients vision was already reduced to 〈20/200 at first presentation. Twenty-eight percent of patients additionally suffered from glaucoma. Two patients exhibited life-threatening extraocular manifestations of CP (larynx stricture, esophagus stricture). Conjunctival or mucosal biopsies were performed in 15 patients with OCP and showed typical immunodeposits at the basement membrane zone in 12/15 patients. Therapy with dapsone (12 patients), oral steroids (11 patients), azathioprine (5 patients), cyclophosphamide (4 patients), colchicine (2 patients) and methotrexate (1 patient) was used concomitantly or consecutively. Complications of OCP including entropion, recurrent epithelial erosions, corneal ulcers, keratitis, and corneal perforations required multiple surgical interventions such as entropion surgery (8 patients), tarsorrhaphy (3 patients), mucous membrane grafting (1 patient), amniotic membrane transplantation (1 patient), tectonic keratoplasty (1 patient), keratoprosthesis (1 patient) and enucleation (1 patient). Despite control of the inflammatory process, further visual loss occurred in 53% of eyes. Reading visual acuity could only be maintained in 35% of eyes. Discussion: Early diagnosis and therapy can prevent ocular complications of OCP. This study indicates that advanced stages of the disease often result in irreversible visual loss despite institution of immunosuppressive therapy. Whether or not the high association of OCP with glaucoma and/or anti-glaucomatous treatment in our patients represents part of the underlying disease process or plays a role in the pathogenesis of OCP must still be clarified.
    Notes: Zusammenfassung Das vernarbende Pemphigoid (cicatricial pemphigoid, CP) ist eine seltene, mit subepidermaler Blasenbildung und Vernarbung einhergehende Autoimmunerkrankung, die sich an Haut und Schleimhaut manifestiert. Eine Augenbeteiligung liegt bei etwa 70% der Patienten vor. Methode: Retrospektiv wurden Krankheitsverlauf, klinische Komplikationen und mögliche Risikofaktoren von Patienten der Augen- und Hautklinik mit vernarbendem Pemphigoid von 1986–1998 untersucht. Ergebnisse: 18/28 Patienten (64%) mit CP hatten eine okuläre Beteiligung. Das Durchschnittsalter der Patienten mit okulärem vernarbendem Pemphigoid betrug 73 Jahre, 61% der Patienten waren weiblich. Bereits bei Erstvorstellung in unserer Klinik bestand bei allen Patienten ein Krankheitsstadium III (83%) oder IV (17%), mit einem Visus 〈0.1 in 38% der Augen. Bei 28% der Patienten wurde zusätzlich ein Glaukom diagnostiziert. Zwei Patienten zeigten eine lebensgefährliche extraokuläre Schleimhautbeteiligung (Larynx- bzw. Ösophagusstriktur). Bei 15 Patienten mit okulärem vernarbendem Pemphigoid wurde eine Bindehaut- bzw. Schleimhautbiopsie aus dem Mund oder Nasen-Rachen-Raum durchgeführt, welche die Verdachtsdiagnose bei 12/15 Patienten immunhistologisch sicherte. Eine Therapie mit Dapson (12 Patienten), oraler Kortikosteroidgabe (11 Patienten), Azathioprin (5 Patienten), Cyclophosphamid (4 Patienten), Colchizin (2 Patienten) und Methotrexat (1 Patient) wurde in Folge oder Kombination eingesetzt. Komplikationen wie Lidfehlstellungen, rezidivierende Epitheldefekte, Hornhautulzera, Keratitiden und Hornhaut-Perforationen erforderten multiple operative Eingriffe wie Entropium-Operation (8 Patienten), Tarsorrhaphie (3 Patienten), Kryoepilation (2 Patienten), Mundschleimhaut-Transplantat (1 Patient), Amniontransplantat (1 Patient), tektonische Keratoplastik (1 Patient), Keratoprothese (1 Patient) und Enukleation (1 Patient). Trotz befriedigender Kontrolle des okulären vernarbenden Pemphigoids kam es bei 53% der Augen zum weiteren Visusabfall. Ein Lesevisus konnte nur in 35% der Augen erhalten werden. Schlußfolgerung: Wahrscheinlich kann die Früherkennung und rechtzeitige Behandlung des okulären vernarbenden Pemphigoids okuläre Komplikationen verhindern. Diese Studie zeigt, daß trotz immunsuppressiver Therapie in Spätstadien häufig ein irreversibler Visusverlust resultiert. Es bleibt zu untersuchen, ob die auffällig hohe Assoziation von okulärem vernarbendem Pemphigoid zu Glaukom bzw. antiglaukomatöser Therapie in unserem Patientenkollektiv als Folge der Grunderkrankung oder als pathogenetischer Faktor zu werten ist.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s003470050021
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    Electronic Resource
    Electronic Resource
    Qualitätssicherung in der gynäkologischen Endoskopie (2000)
    Springer
    Der Gynäkologe 33 (2000), S. 213-219 
    Details
    ISSN: 1433-0393
    Keywords: Schlüsselwörter Qualitätssicherung ; Endoskopie ; Komplikationen ; Key words Quality control ; Endoscopy ; Complications
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Abstract Due to the expanding use of laparoscopic surgery in gynecology, the necessity for evaluation of results was raised. With the intention of quality control in gynecological endoscopy, the gynecological department of the Evangelisches Diakonie-Krankenhaus in Bremen has developed, in cooperation with the Institute for Artificial Intelligence at the University of Bremen and on behalf of the German Society for Gynecological Endoscopy, the quality control program “German Gynecological Endoscopy Complication Register”. In 1997, 20 German endoscopic centers took part in the prospective observational study. A total number of 17,745 cases were reported. Altogether 20,050 endoscopic procedures were performed, 8020 hysteroscopies and 12030 laparoscopies. The complication rate for hysteroscopies amounted to 7.0‰ and that of laparoscopies to 9.6‰. The quality control program of the German Society for Gynecological Endoscopy is a unique tool, comparable to the “German Perinatology Study”. It allows to compare individual hospital profiles, an option that is necessary to gain the best possible results in terms of quality in gynecological surgery in the long term.
    Notes: Zusammenfassung Mit dem Ziel der Qualitätsverbesserung in der gynäkologischen Endoskopie hat die Frauenklinik des Evangelischen Diakonie-Krankenhauses in Bremen im Auftrag der Arbeitsgemeinschaft der Gynäkologischen Endoskopie (AGE) zusammen mit dem KI-Labor der Universität Bremen das Qualitätssicherungs-Programm “Komplikationsregister gynäkologische Endoskopie” entwickelt. Es ermöglicht dem Anwender die differenzierte Betrachtung der durchgeführten Operationen von den Indikationsstellung bis zum Therapieerfolg. Im Jahre 1997 haben 20 endoskopisch tätige Institutionen an der prospektiven Dokumentation der gynäkologisch-endoskopischen Operationen teilgenommen. Bei insgesamt 17.745 Patientinnen wurden 20.050 Eingriffe erfasst, darunter 8020 Hysteroskopien und 12.030 Laparoskopien. Die Komplikationsrate der Hysteroskopien betrug 7,0‰, die der Laparoskopien 9,6‰. Mit dem Qualitätssicherungs-Programm der AGE steht heute ein Instrument zur Verfügung, das vergleichbar der Perinatologiestudie die Daten in Form von vergleichenden Klinikprofilen liefern kann, die notwendig sind, um im Zusammenhang mit endoskopischen Operationen langfristig die bestmögliche Ergebnisqualität zu erzielen.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s001290050537
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    Electronic Resource
    Neurologische Komplikationen nach Organtransplantation (2000)
    Springer
    Der Nervenarzt 71 (2000), S. 249-258 
    Details
    ISSN: 1433-0407
    Keywords: Schlüsselwörter Organtransplantation ; Immunsuppression ; Neurotoxizität ; ZNS-Infektionen ; Komplikationen ; Key words Organ transplantation ; Complications ; Immunosuppression ; Neurotoxicity ; CNS infection
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Summary Following organ transplantation, 30–60% of patients develop neurologic complications which can be classified as pre-existing deficits due to the underlying disease, complications during surgery, metabolic encephalopathies, neurotoxicity of immunosuppressant agents, opportunistic CNS infections, and secondary malignomas as indirect side effects of immunosuppression. While encephalopathies, seizures, or CNS infection can occur in all types of transplantation, some specific neurological complications exist for different types of organ transplantation. In this review, the clinical symptoms and treatment of both the common neurological complications as well as the particular neurological syndromes after liver, heart, and bone marrow transplantation are discussed.
    Notes: Zusammenfassung Nach Organtransplantation entwicklen 30–60% der Patienten neurologische Komplikationen, die eingeteilt werden können in vorbestehende Störungen im Rahmen der Grunderkrankung, intraoperative Komplikationen, metabolische Enzephalopathien, neurotoxische Nebenwirkungen der verschiedenen Immunsuppressiva sowie opportunistische ZNS-Infektionen und sekundäre Malignome als indirekte Folge der Immunsuppression. Differentialdiagnostisch relevant ist, dass einerseits Enzephalopathien, Anfälle oder ZNS-Infektionen bei allen Transplantationen auftreten können, andererseits für einzelne Organtransplantationen bestimmte neurologische Komplikationen typisch sind. In dieser Übersicht werden die allgemeinen neurologischen Komplikationen mit klinischen Leitsymptomen und Therapie sowie die spezifischen neurologischen Krankheitsbilder nach Leber-, Herz- und Knochenmarktransplantation vorgestellt.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s001150050554
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  • 42
    Electronic Resource
    Electronic Resource
    Management von Komplikationen nach prothetischer Stimmrehabilitation (2000)
    Springer
    HNO 48 (2000), S. 508-516 
    Details
    ISSN: 1433-0458
    Keywords: Schlüsselwörter Stimmprothese ; Komplikationen ; Laryngektomie ; Tracheoösophageale Fistel ; Keywords Voice prosthesis ; Complications ; Total laryngectomy ; Tracheoesophageal fistula
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Abstract The growing popularity of prosthetic voice restoration after total laryngectomy confronts ENT specialists with an increasing number of prosthesis-related complications. The ENT specialist should be familiar with the management of these complications in order to maintain the patients speech and social rehabilitation. In a retrospective study on 108 consecutive patients, complications were encountered in 30%. The incidence was not related to the factors age or primary vs. secondary insertion of the prosthesis. Complications consisted of formation of granulation tissue (15,7%), shunt dilatation (5,5%), loss of prosthesis (3,7%), local cellulitis (2,8%), extrusion (1,9%), ingrowth of prosthesis (1,9%) and formation of excessive scar tissue with dislocation of prosthesis (0,9%). Permanent removal of the prosthesis due to complications was necessary in 3 cases (2,8%). Therapeutic measures for the management of complications are described and evaluated. The treatment of complications was well tolerated by all patients and led to satisfying results in most cases. Our observations show that prosthetic voice rehabilitation is associated with various difficulties and complications, but that these can be handled quite easily and successfully in the majority of cases.
    Notes: Zusammenfassung Die wachsende Beliebtheit der prothetischen Stimmrehabilitation nach Laryngektomie konfrontiert den HNO-Arzt immer häufiger mit stimmprothesenbedingten Komplikationen. Als solcher sollte man daher die Komplikationen der Stimmprothesenversorgung kennen und deren Management beherrschen, um die kommunikative und soziale Rehabilitation des Patienten nicht zu gefährden. Die retrospektive Untersuchung von 108 Stimmprothesenträgern erbrachte eine Komplikationshäufigkeit von 30%. Eine Abhängigkeit der Komplikationsinzidenz vom Alter des Patienten oder vom Faktor primäre / sekundäre Protheseneinlage gab es dabei nicht. Häufigste Komplikation war die Entwicklung von Granulationsgewebe (15.7%), gefolgt von Shunterweiterung (5,5%), Prothesenverlust (3,7%), lokalen Infektionen (2,8%), Abstoßung (1,9%), eingewachsener Prothese (1,9%), narbiger Shuntwandverdickung mit Prothesendislokation (0,9%). In nur 3 Fällen (2,8%) mußte die Stimmprothese aufgrund verschiedener Komplikationen wieder entfernt werden. Die erforderlichen therapeutischen Maßnahmen waren für die Patienten wenig belastend und führten in fast allen Fällen zu befriedigenden Ergebnissen. Diese Beobachtungen zeigen, daß die prothetische Stimmrehabilitation zwar nicht ohne Komplikationen und Schwierigkeiten ist, diese jedoch in weitaus der Mehrzahl der Fälle medizinisch leicht zu beherrschen und daher zumutbar sind.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s001060050607
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  • 43
    Electronic Resource
    Electronic Resource
    Die stabile und instabile pertrochantäre Femurfraktur Differenzierte Indikationsstellung für die dynamische Hüftschraube (2000)
    Springer
    Der Unfallchirurg 103 (2000), S. 741-748 
    Details
    ISSN: 1433-044X
    Keywords: Schlüsselwörter Pertrochantäre Fraktur ; Dynamische Hüftschraube ; Instabile Frakturen ; Komplikationen ; Keywords Trochanteric fracture ; Dynamic hip screw (DHS) ; Instable fractures ; Complications
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Abstract The aim of all surgical procedures in the treatment of trochanteric fractures in elderly and even geriatric patients is achievement of initial stability. We examined in a clinical trial whether primary stability was achieved in all types of trochanteric fractures following osteosynthesis with the Dynamic Hip Scres (DHS). From 1994 to 1996, 122 patients with trochanteric fractures had osteosynthesis by dynamic hip screw. Patient records were evaluated and all data got registered with a standardized protocoll; clinical and radiological outcome was analysed after an average period of 1,9 years after injury according to the Traumatic Hip Rating Score. 22% of all patients died meantimes, 51,6% of the remaining 95 patients could get examined. The average age was 75,5 years, the patient population showed an increased preoperative morbidity (2,5 points) according to ASA-Score. 81% showed progressive osteoporosis. According to the AO-classification 47% stable fractures (type A-1) and 53% instable trochanteric fractures (type A-2 and A-3) occured. Surgery lasted 77 minutes average in osteosynthesis of stable fractures. The duration of 108 minutes in instable fractures was significantly higher, as well as the blood loss was 43% increased in these complex fractures. Complications closely associated to the osteosynthesis appeared only in instable fractures (7%). Also common complications (24,6%) predominated with 15,6% in tpy A-2 and A-3 fractures versus 9% in type A-1 fractures; mortality was also different with 5,7% versus 1,6%. Assesment of the functional outcome according to THRS showed a significant deterioration of 20 points in 71% of all patients compared with the preoperative score. The results show that dynamic hip screw osteosynthesis in instable trochanteric fractures is associated to a higher incidence of complications. While the dynamic hip screw still represents the standard implant in stable fractures of the trochanteric regio, beeing aware of improved intramedullary implants regarding biomechanical features and surgical technique, the results justify to critical consider the use of DHS for osteosynthesis in instable fractures of the trochanteric region.
    Notes: Zusammenfassung Bei der operativen Versorgung petrochantärer Femurfrakturen im geriatrischen Krankengut stellt eine sofort übungs- und belastungsstabile Osteosynthese das Therapieziel dar. In einer klinischen Studie wurde vergleichend untersucht, ob dieses Ziel mit der DHS (dynamische Hüftschraube) bei allen pertrochantären Frakturtypen erreicht werden kann. Von 1994–1996 wurden 122 pertrochantäre Frakturen mit der DHS behandelt. Neben der Auswertung durch standardisierte Datenerhebungsprotokolle wurden die Patienten durchschnittlich 1,9 Jahre nach Trauma radiologisch und klinisch nach dem “Traumatic hip rating score” nachuntersucht; 22% waren verstorben, von den verbliebenen 95 Patienten konnten 51,6% nachkontrolliert werden. Bei einem Altersdurchschnitt von 75,5 Jahren lag mit dem ASA-Score von durchschnittlich 2,5 Punkten eine hohe präoperative Morbidität vor; 81% der Fälle wiesen eine fortgeschrittene Osteoporose auf. Nach der AO-Klassifikation handelte es sich um 47% stabile (Typ A1) und 53% instabile (Typ A2 und A3) Frakturen. Die mittlere Operationszeit war bei den instabilen im Vergleich zu den stabilen pertrochantären Frakturen mit 108 gegenüber 77 min signifikant höher, der Blutverlust um 43% größer. Direkt mit der Osteosynthese assoziierte Komplikationen betrafen ausschließlich instabile Frakturen (7%). Allgemeine Komplikationen (24,6%) überwogen ebenfalls mit 15,6% in der Gruppe der Typ A2 und A3 gegenüber der Typ-A1-Frakturen, was sich auch in einer entsprechend höheren Klinikletalität mit 5,7% gegenüber 1,6% ausdrückt. Bei der Bewertung des funktionellen Nachuntersuchungsergebnisses mit dem THRS wiesen 71% der Patienten im Vergleich zum präoperativen Ausgangswert eine deutliche Verschlechterung um durchschnittlich 20 Punkte auf. Die Osteosynthese instabiler pertrochantärer Femurfrakturen durch die DHS ist mit einer höheren Komplikationsrate belastet. Während die DHS für die stabilen Frakturen das Standardverfahren darstellt muss die Osteosynthese instabiler Frakturen vor dem Hintergrund neuerer, operationstechnisch und biomechanisch verbesserter intramedullärer Implantate kritisch betrachtet werden.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s001130050613
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  • 44
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    Electronic Resource
    Unaufgebohrter Humerusnagel (UHN) (2000)
    Springer
    Trauma und Berufskrankheit 2 (2000), S. 277-283 
    Details
    ISSN: 1436-6274
    Keywords: Schlüsselwörter ; Humerusschaftfraktur ; Intramedulläre Marknagelosteosynthese ; UHN ; Komplikationen ; Behandlungsergebnisse ; Keywords ; Fracture of the humeral diaphysis ; Humerus nail ; UHN ; Complications ; Results
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: In a retrospective study, 115 fractures of the humeral diaphysis were evaluated, and 94 of the patients were treated by surgical operations. In 64 patients we used an unreamed humerus nail (UHN) to stabilize the fractures of the humerus diaphysis. All patients with an UHN were followed up. Having analysed the system-specific and general complications and the functional, subjective and radiological results we can recommend the UHN for the treatment of both fractures and pseudarthrosis of the humeral diaphysis.
    Notes: In einer retrospektiv durchgeführten Studie wurden 115 Humerusschaftfrakturen ausgewertet. Operativ wurden 94 Patienten, davon 64 mit einem unaufgebohrten Humerusnagel (UHN), versorgt. Die mit einem UHN behandelten Patienten wurden nachuntersucht. Nach Auswertung der systemspezifischen und allgemeinen Komplikationen sowie der funktionellen, subjektiven und radiologischen Ergebnisse kann der UHN sowohl zur Behandlung der frischen Humerusschaftfraktur als auch zur Versorgung von Humerusschaftpseudarthrosen empfohlen werden.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s100390000318
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  • 45
    Electronic Resource
    Electronic Resource
    Wann ist die arthroskopische Diagnostik und Therapie am Ellbogengelenk beim Trauma angezeigt? (2000)
    Springer
    Trauma und Berufskrankheit 2 (2000), S. S81 
    Details
    ISSN: 1436-6274
    Keywords: Schlüsselwörter ; Arthroskopie ; Ellbogengelenk ; Trauma ; Minimalinvasive Osteosynthese ; KomplikationenArthroscopy ; Elbow joint ; Injury ; Osteosynthesis ; Complications ; Key words ; Arthroskopie ; Ellbogengelenk ; Trauma ; Minimalinvasive Osteosynthese ; KomplikationenArthroscopy ; Elbow joint ; Injury ; Osteosynthesis ; Complications
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Abstract Elbow arthroscopy, unlike arthroscopy of the knee or shoulder, is technically a very demanding procedure that is associated with a high risk of complications owing to the surrouding neurovascular structures. In the case of trauma the arthroscopic approach is even more difficult because of the altered anatomy. In addition, the time available for the performance of any surgical procedures is very much limited by the immediate onset of periarticular swelling with fluid loss caused by the damage to the joint capsule that is present in most cases. Arthroscopy of the elbow should not therefore be considered to be indicated in acute trauma except in isolated cases and after very careful consideration of the risks and benefits for the patient. This procedure cannot be generally recommended as a standard method of examining or treating freshly sustained injuries.On the other hand, elbow arthroscopy can be very helpful in the case of posttraumatic functional deficiencies or such pathologic findings as loose bodies after osteochondral fractures, adhesions and intraarticular scars, while little or no improvement can be expected for vague joint symptoms or posttraumatic arthrosis. As there is a relatively high risk of neurological complications the patient needs to be given quite comprehensive information in an intensive preoperative session. Diagnostic arthroscopy is hardly ever indicated in a trauma case because of the excellent results yielded by modern noninvasive imaging methods, such as ultrasound, X-ray, computed tomography and MRI.
    Notes: Zusammenfassung Im Gegensatz zur Arthroskopie des Knie- oder Schultergelenks ist die Arthroskopie des Ellbogengelenks mit erheblichen technischen Schwierigkeiten und entsprechend hohen Komplikationsrisiken verbunden. Beim Trauma ist die Arthroskopie zudem aufgrund der veränderten anatomischen Verhältnisse noch weit komplizierter. Die Operationszeit ist wegen der rasch auftretenden periartikulären Schwellung infolge der meist bestehenden Gelenkkapselläsionen deutlich limitiert. Die Indikation zur Arthroskopie sollte daher nur im Einzelfall unter sorgfältiger Abwägung der Risiken und der zu erwartenden Vorteile gestellt werden. Eine generelle Empfehlung für dieses Verfahren bei frischen Verletzungen kann nicht ausgesprochen werden. Sinnvoll ist der Einsatz dagegen bei einigen posttraumatischen Veränderungen, z. B. freien Gelenkkörpern nach osteochondralen Frakturen oder Arthrolysen bei intraartikulären Vernarbungen, während bei „unklaren Gelenkbeschwerden“ oder posttraumatischer Arthrose kaum Verbesserungen zu erwarten sind. Wegen des relativ hohen Risikos neurologischer Komplikationen ist eine intensive präoperative Aufklärung der Patienten erforderlich. Eine diagnostische Arthroskopie beim Trauma ist bei der Aussagekraft der modernen nichtinvasiven Untersuchungsverfahren kaum noch angezeigt.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/PL00014932
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  • 46
    Electronic Resource
    Electronic Resource
    Indikationsstellung und Verfahrenswahl bei Beckenringverletzungen (2000)
    Springer
    Trauma und Berufskrankheit 2 (2000), S. 39-45 
    Details
    ISSN: 1436-6274
    Keywords: Schlüsselwörter ; Beckenringfrakturen ; Klassifikation ; Behandlungsverfahren ; Komplikationen ; Ergebnisse ; Keywords ; Pelvic ring fractures ; Classification ; Treatment ; Complications ; Results
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Injuries of the pelvis are caused by high-energy trauma, and concomitant injuries are therefore often found. Many patients with such pelvic injuries have multiple injuries. Accurate diagnosis and classification are both fundamental to adequate therapy. Especially in the presence of complex pelvic trauma and in polytraumatised patients priority-oriented and fast procedures are essential. Type B and C instabilities require operative treatment. In emergency cases with unstable pelvic fractures external fixation has proved successful. For definitive treatment with internal stabilisation different internal fixation procedures with screws and plates selected with reference to the features of the injury are needed. The operative stabilisation of the pelvic ring demands particular care, because various main vessels and nerves are adjacent to the injury site. Ultimately, the results of treatment depend heavily on the quality of anatomical restoration of the pelvic ring.
    Notes: Beckenverletzungen entstehen aufgrund hoher lokaler Gewalteinwirkung und sind deswegen häufig mit Begleitverletzungen kombiniert. Bei vielen beckenverletzten Patienten liegt ein Polytrauma vor. Grundlage einer adäquaten Therapie von Verletzungen des Beckenrings sind eine exakte Diagnostik und Klassifikation. Vor allem beim komplexen Beckentrauma und beim Vorliegen eines Polytraumas ist ein rasches und an Prioritäten orientiertes Vorgehen entscheidend. Instabilitäten vom Typ B und C erfordern eine operative Stabilisierung. Dabei steht in der Notfallbehandlung des instabilen Beckenrings die externe Stabilisierung im Vordergrund. Beim Übergang auf interne Fixationsverfahren haben sich abhängig von der Verletzungsmorphologie verschiedene Schrauben- und Plattenmontagen bewährt. Die operative Stabilisierung des Beckenrings erfordert wegen der engen Nachbarschaft zu verschiedenen Gefäß- und Nervenbahnen besondere Sorgfalt. Das Endergebnis hängt dabei ganz wesentlich davon ab, wie gut die Wiederherstellung der anatomischen Form des Beckenrings gelungen ist.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s100390050089
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  • 47
    Electronic Resource
    Electronic Resource
    Verletzungen des thorakolumbalen Übergangs (2000)
    Springer
    Trauma und Berufskrankheit 2 (2000), S. 162-166 
    Details
    ISSN: 1436-6274
    Keywords: Schlüsselwörter ; Thorakolumbale Frakturen ; Transpedikuläre Spondylodese ; Spongiosaplastik ; Komplikationen ; Keywords ; Thoracolumbar fractures ; Transpedicular spondylodesis ; Bone grafting ; Complications
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Spinal fractures are located predominantly at the thoracolumbar junction. After conservative treatment, for unstable fractures operative procedures were established during the last 20 years. Using implants with angular stability, dorsal transpedicular fixation yields good clinical results even compared with those of combined dorsoventral procedures. Transpedicular bone grafting is controversial as resorption frequently occurs; it has given disappointing results in fracture types in which definitive segmental fusion is unavoidable, so that combined dorso-ventral stabilization is necessary in such cases. The most frequent complications of dorsal instrumentation are the result of badly positioned transpedicular screws.
    Notes: Die Verletzungen des thorakolumbalen Übergangs stellen die Mehrzahl der Frakturen der Wirbelsäule dar. Nach der konservativen Therapie hat sich in den letzten beiden Jahrzehnten die operative Versorgung instabiler Frakturen etabliert. Die dorsale transpedikuläre Spondylodese unter Verwendung winkelstabiler Implantate stellt ein Verfahren dar, mit dem sich auch im Vergleich zu aufwändigen dorsoventralen Rekonstruktionen bei den meisten Frakturen gute klinische Resultate erzielen lassen. Der additionellen transpedikulären intrakorporalen Spongiosaplastik wird aufgrund der zu beobachtenden Resorption des Transplantats zunehmend geringere Bedeutung beigemessen. Auch bei Frakturtypen, bei denen eine definitive Fusion angestrebt werden sollte, hat die transpedikuläre interkorporale Knochentransplantation enttäuscht, sodass in derartigen Fällen nach primärer dorsaler Stabilisierung sekundär die Fusion von ventral erfolgen sollte. Die häufigsten Komplikationen bei der dorsalen transpedikulären Spondylodese sind auf Fehllagen der transpedikulären Schrauben zurückzuführen.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/PL00010931
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  • 48
    Electronic Resource
    Electronic Resource
    Macrodystrophia lipomatosa with associated fibrolipomatous hamartoma of the median nerve (2000)
    Springer
    Pediatric surgery international 16 (2000), S. 216-218 
    Details
    ISSN: 1437-9813
    Keywords: Key words Macrodystrophia lipomatosa ; Fibrolipomatous hamartoma ; Magnetic resonance imaging ; Median nerve
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract  Macrodystrophia lipomatosa (MDL) is a rare disease typically causing localized gigantism and is often associated with a fibrolipomatous hamartoma (FH) of the median or plantar nerve. A previously unreported case of MDL with associated FH of the median nerve is presented.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s003830050728
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  • 49
    Electronic Resource
    Electronic Resource
    Infantile acute pancreatitis after mumps vaccination simulating an acute abdomen (2000)
    Springer
    Pediatric surgery international 16 (2000), S. 488-489 
    Details
    ISSN: 1437-9813
    Keywords: Key words Pancreatitis ; Childhood ; Mumps vaccination ; Complications
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract  We describe an extremely rare case of acute pancreatitis presenting as an acute abdomen that appeared as a complication of mumps vaccination in a young child. A laparotomy performed because of suspected perforated appendicitis proved unnecessary in retrospect. No similar case in infancy and early childhood has been reported to date.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s003830000417
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  • 50
    Electronic Resource
    Electronic Resource
    Imaging of plant-thorn synovitis (2000)
    Springer
    Skeletal radiology 29 (2000), S. 605-608 
    Details
    ISSN: 1432-2161
    Keywords: Keywords Plant-thorn synovitis ; Monoarticular arthritis ; Elbow ; Magnetic resonance imaging ; Ultrasound ; Power Doppler
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract  We describe a case of plant-thorn synovitis of the elbow resulting from a thorn injury. This caused recurrent pain and swelling of the elbow over a 3-month period. A magnetic resonance imaging examination was initially requested to exclude septic arthritis, and demonstrated a joint effusion, synovitis, and a 2-cm linear opacity embedded in the synovium. Ultrasound was performed prior to surgery to confirm these findings and provide accurate localization of the thorn fragment, later removed at surgery. To our knowledge this is the first example of this condition that has been confirmed by radiological imaging prior to surgery.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002560000244
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  • 51
    Electronic Resource
    Electronic Resource
    Effect of low back posture on the morphology of the spinal canal (2000)
    Springer
    Skeletal radiology 29 (2000), S. 217-223 
    Details
    ISSN: 1432-2161
    Keywords: Key words Spinal canal ; Low back posture ; Morphologic change ; Magnetic resonance imaging
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract  Objective. To define the possible mechanism of posture-dependent symptoms of spinal stenosis by measuring the effect of low back posture on morphologic changes of the intervertebral discs and spinal canal in healthy young people. Design.Twenty healthy young volunteers underwent magnetic resonance imaging while supine with their spine in neutral, flexed, extended, and right and left rotational positions. The axial MR images at the middle of the intervertebral discs of L3–4 and L4–5 were analyzed to measure the difference in the size and shape of the intervertebral discs and spinal canal in each posture. Results.  Extension or rotation decreased the sagittal diameters and cross-sectional areas of the dural sac and spinal canal and increased the thickness of the ligamentum flavum, whereas flexion had the opposite effects. The gap between the convex posterior disc margin and the anterior margin of the facet joint on each side, represented as the subarticular sagittal diameter, increased with flexion and decreased with extension or rotation. The direction of rotation did not result in asymmetry of the subarticular sagittal diameter, but right rotation caused thickening of the right ligamentum flavum, and vice versa. The shape and dimensions of the disc did not change significantly according to the positions of the low back. Conclusions.With extension or rotation, the thickness of the ligamentum flavum increased and the posterior margin of the intervertebral disc was approximated to the facet joint without any change in shape and size of the disc. These phenomena result in a decrease in the size of the spinal canal and dural sac in extension or rotation postures in young healthy people without disc degeneration, and may explain the posture-dependent symptom of spinal stenosis.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002560050596
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  • 52
    Electronic Resource
    Electronic Resource
    Patient perception of magnetic resonance arthrography (2000)
    Springer
    Skeletal radiology 29 (2000), S. 265-269 
    Details
    ISSN: 1432-2161
    Keywords: Key words MR arthrography ; Joint injection ; Gadolinium (intra-articular) ; Pain-rating scores ; Arthrogram ; Complications
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract  Objective. Magnetic resonance (MR) arthrography has been demonstrated to be more accurate than MR imaging alone in the identification of a variety of musculoskeletal pathology. While the complication rate of intra-articular gadolinium: saline injection has been shown to be relatively low, MR arthrography is more invasive, painful, and costly, and less convenient, than MR imaging alone. The purpose of this study was to evaluate patients’ perception of the fear and discomfort, and to assess their overall acceptance of the intra-articular gadolinium injection. Design and patients. Between October 1997 and January 1998, 113 outpatients who were referred to Yale-New Haven Hospital for MR arthrography of the ankle, elbow, hip, knee, shoulder, or wrist were asked to complete a questionnaire rating their fear of factors most commonly associated with the procedure including ”pain”, ”needles”, ”complications”, and ”discovery of results that would lead to surgery”. In addition, after having undergone the intra-articular gadolinium:saline injection, patients were asked to rate their perception of pain. Results. While many patients expressed fear of ”pain” and ”needles”, after having undergone the injection their overall pain rating score was low. Only 6% actually found gadolinium arthrography more painful than expected. Conclusion. Despite the fact that patients expressed apprehension about certain aspects of MR arthrography, subjects who underwent the intra-articular gadolinium injection considered the discomfort less than expected. Clinicians should not hesitate to order MR arthrography because the accuracy of the procedure is high enough that patients accept the discomfort.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002560050605
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  • 53
    Electronic Resource
    Electronic Resource
    Complete rupture of the distal semimembranosus tendon with secondary hamstring muscles atrophy: MR findings in two cases (2000)
    Springer
    Skeletal radiology 29 (2000), S. 362-364 
    Details
    ISSN: 1432-2161
    Keywords: Key words Hamstring muscles ; Semimenbranosus ; Tear ; mass ; Magnetic resonance imaging
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract  Complete rupture of the hamstring muscles is a rare injury. The proximal musculo-tendinous junction is the most frequent site of rupture. We present two cases of complete rupture of the distal semimenbranosus tendon, which clinically presented as soft-tissue masses. MR imaging permitted the correct diagnosis. There has been only one other such case reported.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002560000216
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  • 54
    Electronic Resource
    Electronic Resource
    Solid aneurysmal bone cyst in the humerus (2000)
    Springer
    Skeletal radiology 29 (2000), S. 470-473 
    Details
    ISSN: 1432-2161
    Keywords: Key words Aneurysmal bone cyst ; Humerus ; Giant cell reparative granuloma ; Pathological fracture ; Radiography ; Magnetic resonance imaging
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract  We report on a 69-year-old woman with a solid variant of aneurysmal bone cyst (solid ABC) in the left humerus with a pathological fracture. Radiographically, the lesion exhibited a relatively well-defined osteolytic lesion in the diaphysis of the left humerus. On magnetic resonance (MR) imaging, the medullary lesion exhibited a homogeneous signal intensity isointense with surrounding normal muscles on the T1-weighted images and a mixture of low and high signal intensity on the T2-weighted images. Contrast-enhanced T1-weighted images revealed diffuse enhancement of the entire lesion. The pathological study showed a proliferation of fibroblasts, histiocytes, chronic inflammatory cells and numerous multinucleated giant cells in a collagenous matrix. Abundant osteoid formation in the matrix was observed, but the cells were devoid of nuclear atypia. Aneurysmal cystic cavities were absent. A review of the English literature found 22 cases of solid ABC of the long bones.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002560000236
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  • 55
    Electronic Resource
    Electronic Resource
    Juxta-articular hemangioma of long bone (2000)
    Springer
    Skeletal radiology 29 (2000), S. 535-537 
    Details
    ISSN: 1432-2161
    Keywords: Key words Computed tomography ; Intraosseous hemangioma ; Magnetic resonance imaging ; Epiphysis equivalent ; Tibia
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract  We report on a rare case of an intraosseous hemangioma involving the proximal tibia in a 70-year-old man. Radiographically, the lesion was a well-defined osteolytic lesion with marginal sclerosis. The CT images demonstrated a well-defined osteolytic lesion with partial cortical breakthrough. T1-weighted MR images showed a hypointense lesion, while T2-weighted images revealed hyperintense areas, with internal, hypointense septa. Gadolinium-enhanced T1-weighted images showed lattice-like enhancement of the lesion.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002560000256
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  • 56
    Electronic Resource
    Electronic Resource
    Rapid chondrolysis after an intra-articular leak of bone cement in treatment of a benign acetabular subchondral cyst: an unusual complication of percutaneous injection of acrylic cement (2000)
    Springer
    Skeletal radiology 29 (2000), S. 275-278 
    Details
    ISSN: 1432-2161
    Keywords: Key words Bone subchondral cyst ; Acetabulum ; Interventional radiology ; Complications ; Methylmethacrylate ; Chondrolysis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract  Percutaneous injection of methylmethacrylate is now increasingly employed to treat bone lesions, both malignant and benign. However, the risks of this procedure are still to be fully established. In this report, we describe a case of rapid chondrolysis appearing after the intra-articular leakage of cement during injection of an acetabular subchondral cyst, resulting in hip replacement. Although the mechanism of such chondrolysis is unknown, this event suggests a chondrolytic effect of the acrylic cement. Thus, it is essential to systematically search for the presence of an intra-articular passage before injecting bone cement into a peri-articular cyst. This unusual complication highlights the need for rigorous evaluation of the benefits and risks of percutaneous injection of acrylic cement in the treatment of benign lesions, especially close to an articulation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002560050607
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  • 57
    Electronic Resource
    Electronic Resource
    Subcutaneous and musculoskeletal sparganosis: imaging characteristics and pathologic correlation (2000)
    Springer
    Skeletal radiology 29 (2000), S. 402-408 
    Details
    ISSN: 1432-2161
    Keywords: Key words Soft tissue ; Magnetic resonance imaging ; Sparganosis ; Sparganosis ; magnetic resonance imaging ; Sparganosis ; ultrasonography ; Parasitic infection ; Sparganum
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract  Objective. To document the imaging characteristics of subcutaneous and musculoskeletal sparganosis. Design and patients. Ten patients with musculoskeletal sparganosis were examined, with a variety of imaging modalities including MRI (n=6), ultrasonography (n=8), plain radiography (n=7) and CT (n=1). Pathologic correlation was carried out in all cases. Results. Nine lesions involved soft tissues, of which seven were in the thigh, two in the trunk and one involved a vertebral body. The majority of the lesions in soft tissue were confined to the subcutaneous layer but two extended deep into underlying muscles. Sonography revealed low-echoic serpiginous tubular tracts (8/8), and an intraluminal echogenic structure (4/8). MRI revealed multiple serpiginous tubular tracts and peripheral rim enhancement. Two patients showed perilesional soft tissue edema. Pathologically, the lesion consisted of a larva surrounded by three layers of inflammation: an inner epithelioid granulomatous cell layer, middle chronic inflammatory cell layers, and an outer fibrous layer. Conclusion. The study suggests that if serpiginous tubular tracts are seen at imaging studies, musculoskeletal sparganosis should be included in the differential diagnosis.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002560000206
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  • 58
    Electronic Resource
    Electronic Resource
    Pectoralis major muscle and tendon tears: diagnosis and grading using magnetic resonance imaging (2000)
    Springer
    Skeletal radiology 29 (2000), S. 305-313 
    Details
    ISSN: 1432-2161
    Keywords: Key words Pectoralis major muscle ; Magnetic resonance imaging ; Tendons ; injuries ; Tendons ; magnetic resonance imaging ; Muscles ; injuries ; Muscles ; magnetic resonance imaging
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract  Objective. To assess the accuracy and utility of magnetic resonance (MR) imaging in the detection and grading of pectoralis major muscle and tendon tears. Design and patients. A retrospective review was carried out of 10 patients referred for MR imaging for suspected pectoralis muscle injury and possible operative therapy. The pectoralis muscle and tendon were imaged using thin (3–4 mm) axial sections with a variety of sequences combined for anatomical delineation (T1-weighted SE or PD SE) and fluid detection (T2-weighted SE, T2-weighted FSE with fat suppression, or STIR). Surgical correlation was available in six patients. Clinical follow-up was available in four patients treated by nonoperative therapy. Results. MR imaging identified five complete tears, four partial tears and one normal tendon. One complete and one partial tear were at the myotendinous junction. The remaining seven injuries were at the enthesis. Surgical correlation consisted of five complete tears and one partial tear. One complete and one partial tear were at the myotendinous junction with the remaining four complete tears at the enthesis. The MR interpretation and surgical findings were in agreement in all six cases. All four patients treated with nonoperative therapy demonstrated improvement at a clinical follow-up examination, with restoration of function and strength consistent with a healed prior partial injury. Conclusion. MR imaging is accurate and useful in detecting and grading tears involving the pectoralis major muscle and tendon, facilitating the identification of patients with complete tears who are candidates for operative therapy.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002560000199
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  • 59
    Electronic Resource
    Electronic Resource
    Imaging in isolated sacral tuberculosis: a review of 15 cases (2000)
    Springer
    Skeletal radiology 29 (2000), S. 392-396 
    Details
    ISSN: 1432-2161
    Keywords: Key words Sacral ; Tuberculosis ; Magnetic resonance imaging
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract  Objective. To review imaging studies of isolated involvement of the sacrum due to tuberculosis and determine the role of imaging in the diagnosis and management of these patients. Design and patients. A retrospective analysis of 15 cases of isolated sacral tuberculosis imaged with MR imaging was performed. The CT images were also reviewed where available, and the various lesion characteristics were identified. We also reviewed the medical records in an attempt to determine the impact of the imaging studies on the management of these patients. Results. Fifteen patients (5 male, 10 female) presented with symptoms of 3–15 months’ duration. Chronic localized backache with muscle spasm was the commonest presenting symptom; discharging sinuses with abscess formation was found in six patients, five of whom were children. MR imaging of the sacrum revealed a hypointense marrow signal on T1-weighted images and hyperintense signal on T2-weighted images in 14 of 15 patients, the S2 vertebra being always involved. CT revealed osteolytic changes in the sacrum in all the five patients in whom CT was performed. All patients showed marked clinical improvement within 1 year of anti-tuberculous chemotherapy. Conclusion. Isolated tuberculosis of the sacrum is uncommon but should be suspected in patients presenting with chronic low backache or children with discharging sinuses/abscesses and showing sacral destruction on CT or MR imaging. MR imaging can identify cases and enables early institution of anti- tuberculous chemotherapy.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002560000229
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  • 60
    Electronic Resource
    Electronic Resource
    Juxtacortical chondromyxoid fibroma arising in an apophysis (2000)
    Springer
    Skeletal radiology 29 (2000), S. 466-469 
    Details
    ISSN: 1432-2161
    Keywords: Key words Bone neoplasm ; Chondromyxoid fibroma ; Femur ; Apophysis ; Radiography ; Magnetic resonance imaging
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract  We present a rare case of juxtacortical chondromyxoid fibroma arising in the lesser trochanter of the right femur which corresponds to an apophysis. Radiography showed a well-defined expansive lesion with a sclerotic margin measuring 5×3.5 cm in diameter in the lesser trochanter. On spin echo T1-weighted images, the lesion revealed low signal intensity similar to muscle. On spin echo T2-weighted images, the lesion revealed high heterogeneous signal intensity, which after gadolinium injection showed heterogeneous enhancement. The inner margin of the cortex was intact and adjacent bone marrow was of normal signal intensity. The outer margin of the lesion was also clearly defined and extension into adjacent soft tissue beyond the exophytic cortical outgrowth was not evident.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002560000245
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  • 61
    Electronic Resource
    Electronic Resource
    D3 Lymph Node Dissection in Gastric Cancer: Evaluation of Postoperative Mortality and Complications (2000)
    Springer
    Surgery today 30 (2000), S. 700-705 
    Details
    ISSN: 1436-2813
    Keywords: Key words Gastric cancer ; Lymph node dissection ; Mortality ; Complications
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Since November 1995 we have been performing a D3 lymph node dissection in patients undergoing an operation for gastric cancer with a curative intent. The aim of the present study was to evaluate whether this procedure results in an increased postoperative mortality or complication rate in a Western population. Between November 1995 and August 1997 the postoperative courses of 76 patients were retrospectively assessed (45.3 lymph nodes per patient, lymph node ratio: 0.16). The patient outcome was compared with data from a historic control group of patients (n = 383) in whom the newly established D2 dissection was studied in our department. Regarding the demographic, clinical, and tumor-pathologic data, and the choice of resection and reconstructive procedures, the two groups differed only slightly. The postoperative mortality of 1% was lower (vs 6.8%) while the overall complication rate of 34% (vs 32.1%) was identical. In particular, no anastomotic leakage (vs 9.4%) and fewer nonsurgical complications (17.1% vs 27.9%) occurred. The reoperation rate was 1% vs 9.7%. However, in 6% of the patients drainage tubes had to be inserted under computed tomographic guidance. The average hospital stay remained unchanged (21.9 vs 20.7 days). A D3 dissection was shown to be feasible while demonstrating no disadvantages in the patients when compared with the D2 procedure.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s005950070080
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  • 62
    Electronic Resource
    Electronic Resource
    Familial occurrence of glenoid dysplasia: report of two cases in two consecutive generations (2000)
    Springer
    Archives of orthopaedic and trauma surgery 120 (2000), S. 349-351 
    Details
    ISSN: 1434-3916
    Keywords: Key words Glenoid dysplasia ; Magnetic resonance imaging ; Multidirectional shoulder dislocation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Glenoid dysplasia is a rare abnormality of the shoulder. We report glenoid dysplasia in two consecutive generations: a boy and his father. Both suffered recurrent shoulder dislocations, and radiological examination revealed bilateral glenoid dysplasia. Our cases confirm dominant inheritance of this osseous malformation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s004020050481
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  • 63
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    Electronic Resource
    Diagnostic and therapeutic management of lumbar and thoracic spondylodiscitis – an evaluation of 59 cases (2000)
    Springer
    Archives of orthopaedic and trauma surgery 120 (2000), S. 245-251 
    Details
    ISSN: 1434-3916
    Keywords: Key words Spondylodiscitis ; Magnetic resonance imaging ; Computed tomography ; Diagnostic algorithm ; Therapeutic algorithm
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Fifty-nine patients with spondylodiscitis (SD) of the thoracic and/or lumbar spine were followed-up clinically and radiologically [X-ray, computed tomography (CT), magnetic resonance imaging (MRI)] over a mean time of 2.2 years (1–6.5 years). All patients without abscess formation (n = 35) were treated conservatively. Out of the group with abscess formation (n = 24) 6 patients were also treated conservatively, 11 were drained under CT control and 7 were operated. At time of diagnosis, “signs of florid inflammation” were seen in 60% of the roentgenograms, in 93% of the CTs and in all of the MRIs. The sensitivity to differentiate between SD with and without abscess formation was 85% by MRI and 69% by CT. “Signs of regressive inflammation” and “signs of increasing osseous consolidation”, essential facts for starting remobilization, could first be seen using CT 6 weeks after onset of therapy. Using MRI these signs were seen with a considerable delay at 12 weeks. Clinically, only 3 of the 59 analyzed patients developed recurrent SD. In conclusion, MRI is the radiological method of choice for establishing the diagnosis of SD, in particular with regard to differentiating between cases with and without abscess formations. In contrast, CT is superior for performing success control after treatment. Therapeutically, conservative, minimal-invasive and operative procedures are not rival but rather complementary.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s004020050457
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  • 64
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    Electronic Resource
    A survey of equid mitochondrial DNA: Implications for the evolution, genetic diversity and conservation of Equus (2000)
    Springer
    Conservation genetics 1 (2000), S. 341-355 
    Details
    ISSN: 1572-9737
    Keywords: conservation genetics ; Equus ; evolution ; mitochondrial DNA control region ; mitochondrial 12S rRNA
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The evolution, taxonomy and conservation of the genus Equuswere investigated by examining the mitochondrial DNA sequences of thecontrol region and 12S rRNA gene. The phylogenetic analysis of thesesequences provides further evidence that the deepest node in thephylogeny of the extant species is a divergence between twolineages; one leading to the ancestor of modern horses (E.ferus, domestic and przewalskii) and the other to thezebra and ass ancestor, with the later speciation events of the zebrasand asses occurring either as one or more rapid radiations, or withextensive secondary contact after speciation. Examination of the geneticdiversity within species suggested that two of the E. hemionussubspecies (E. h. onager and E. h. kulan) onlyrecently diverged, and perhaps, are insufficiently different to beclassified as separate subspecies. The genetic divergence betweendomestic and wild forms of E. ferus (horse) and E.africanus (African ass) was no greater than expected within anequid species. In E. burchelli (plains zebra) there was anindication of mtDNA divergence between populations increasing withdistance. The implications of these results for equid conservation arediscussed and recommendations are made for conservation action.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1011559200897
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    Last Judgment: The Visionary Biology of J. B. S. Haldane (2000)
    Springer
    Journal of the history of biology 33 (2000), S. 457-491 
    Details
    ISSN: 1573-0387
    Keywords: J. B. S. Haldane ; biology ; politics ; genetics ; evolution ; population genetics ; physiology ; Darwinism ; experimental biology ; eugenics ; Britain ; Russia ; India ; Soviet ; Communism ; socialism ; philosophy ; vision ; literature ; popularization ; religion ; human experimentation ; bioethics ; Venus ; Mars ; science fiction ; technocracy ; futurology ; H. G. Wells ; Julian Huxley ; Olaf Stapledon ; C. S. Lewis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , History
    Notes: Abstract This paper seeks to reinterpret the life and work of J. B. S. Haldane by focusing on an illuminating but largely ignored essay he published in1927, “The Last Judgment” – the sequel to his better known work, Daedalus (1924). This astonishing essay expresses a vision of the human future over the next 40,000,000 years, one that revises and updates Wellsian futurism with the long range implications of the “new biology” for human destiny. That vision served as a kind of lifelong credo, one that infused and informed his diverse scientific work, political activities, and popular writing, and that gave unity and coherence to his remarkable career.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1004891323595
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    Sex, Death, and Evolution in Proto- and Metazoa, 1876–1913 (2000)
    Springer
    Journal of the history of biology 33 (2000), S. 221-246 
    Details
    ISSN: 1573-0387
    Keywords: August Weismann ; ciliates ; Clifford Dobell ; cytology ; death ; Emile Maupas ; evolution ; Herbert Spencer Jennings ; Otto Bütschli ; Paramecium ; rejuvenescence ; sex
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , History
    Notes: Abstract In the period 1875–1920, a debate about the generality and applicability of evolutionary theory to all organisms was motivated by work on unicellular ciliates like Paramecium because of their peculiar nuclear dualism and life cycles. The French cytologist Emile Maupas and the German zoologist August Weismann argued in the 1880s about the evolutionary origins and functions of sex (which in the ciliates is not linked to reproduction), and death (which appeared to be the inevitable fate of lineages denied sexual conjugation), an argument rooted in the question of whether the ciliates and their processes where homologous to other cellular organisms. In the beginning of the twentieth century, this question of homology came to be less important as the ciliates were used by the British protozoologist Clifford Dobell and the American zoologist Herbert Spencer Jennings to study evolutionary processes in general rather than problems of development and cytology. For them, homology mattered less than analogy. This story illustrates two partially distinct problems in evolutionary biology: first, the question of whether all living things have common features and origins; and second, whether their history and current nature can be described by identical mechanisms. Where Maupas (contra Weismann) made the ciliates qualitatively the same as all other organisms in order to create a cohesive evolutionary theory for biology, Jennings and Dobell made them qualitatively different in order to achieve the same end.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1004740325150
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    Gliomas of the optic nerve: histological, immunohistochemical (MIB-1 and p53), and MRI analysis (2000)
    Springer
    Acta neuropathologica 99 (2000), S. 563-570 
    Details
    ISSN: 1432-0533
    Keywords: Key words Ki-67 labeling index ; Magnetic resonance imaging ; Optic nerve glioma ; p53 ; Pilocytic ¶astrocytoma
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Gliomas of the optic nerve, although typically of pilocytic (WHO grade I) histology, can present within the spectrum of astrocytic neoplasia including glioblastoma (WHO grade IV). In certain cases, histologic features alone make the distinction between pilocytic and diffuse astrocytomas difficult. We reviewed 22 cases of optic nerve gliomas, 19 of which were pilocytic astrocytomas (PA), and 3 of which were diffuse, non-pilocytic astrocytomas. The cases were evaluated for their clinical course, radiographic appearance, histologic grade, and proliferation indices as detected by MIB-1 (Ki-67) and p53 antibodies. Of the 19 PA, 14 showed no tumor growth by magnetic resonance imaging, and had Ki-67 and p53 labeling indices (LI) of 〈 1%. The other 5 PA exhibited aggressive behavior manifest by marked diffuse infiltrative tumor growth causing death in 2 patients, 1 of whom was diagnosed with neurofibromatosis type 1 (immunoperoxidase and radiographs not available), and marked local growth with an average time to growth of 39.3 months, a Ki-67 LI of 2–3%, and a p53 LI of 〈 1% in three others. Three of the five aggressive PA histologically demonstrated a finely reticulated pattern, a pattern that appears as an exaggeration or expansion of the normal neuroglia of the optic nerve, and may simulate a diffuse low-grade astrocytoma. Two demonstrated the coarsely reticulated pattern, with the biphasic and microcystic pattern typical of PA. Three diffuse astrocytomas (2 anaplastic astrocytomas and 1 glioblastoma) originated clinically and radiographically from the optic nerve, and revealed a Ki-67 LI of 2–12%, a p53 LI of 2–8%, and an average time to growth of 8 months. We conclude that the majority of PA of the optic nerve are non-aggressive, stabilize radiographically, and have Ki-67 and p53 LI 〈 1%. However, a subpopulation of PA has a propensity for aggressive behavior, and are identified by a Ki-67 LI of 2–3% and a p53 LI of 〈 1%. Diffuse astrocytomas have both Ki-67 and p53 LI 〉 2%. Thus, in cases of aggressive optic nerve tumors in which the histologic review of biopsy material cannot confidently confirm the diagnosis of pilocytic or diffuse fibrillary glioma, a p53 LI of 〉 1% appears to favor the diagnosis of diffuse astrocytoma.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s004010051161
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    Differentialindikation zentraler und peripherer Leitungsanästhesien (2000)
    Springer
    Der Anaesthesist 49 (2000), S. 495-504 
    Details
    ISSN: 1432-055X
    Keywords: Schlüsselwörter Regionalanästhesie ; Spinalanästhesie ; Epiduralanästhesie ; periphere Nervenblockaden ; Komplikationen ; Keywords Regional anesthesia ; Spinal anesthesia ; Epidural anesthesia ; Nerve blocks ; Complications
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Abstract Serious neurological complications caused by spinal hematoma or abscess following central neuraxial block have been reported more often during the last years. In contrast, severe complications are extremely rare associated with peripheral nerve blocks. Concerned about the safety of spinal and epidural anesthesia, we encourage the use of peripheral regional techniques for procedures on the lower extremity and especially for postoperative regional analgesia. Motor block due to lumbar epidural anesthesia using high concentrations of local anesthetic makes spinal hematoma or abscess difficult to recognize. Therefore, low concentrations of local anesthestic should be used for postoperative epidural analgesia. Any increase in motor block following neuraxial blockade should raise the suspicion of a spinal compression (e.g. hematoma or abscess). Other symptoms are back pain, radicular pain or paresthesia and incontinence. Disastrous neurological injuries can only be prevented by immediate diagnosis (MR, CT or myelography) and therapy (surgical decompression).
    Notes: Zusammenfassung In den letzten Jahren wird vermehrt über schwerwiegende neurologische Komplikationen durch spinale Hämatome und Abszesse nach rückenmarksnahen Regionalanästhesien berichtet. Vor diesen Hintergrund werden die verschiedenen Regionalanästhesietechniken für die untere Extremität und ihre Komplikationen gegenübergestellt, denn die komplikationsärmeren peripheren Leitungsanästhesien bieten sich im Bereich der unteren Extremität als Alternative zur Spinal- oder Epiduralanästhesie an. Es wird empfohlen, zur postoperativen Schmerztherapie lumbale Epiduralanalgesien soweit möglich durch periphere Leitungsblockaden zu ersetzen. Kontinuierliche Blockaden, z.B. im Bereich des N. femoralis eignen sich auch zur postoperativen Schmerztherapie. Bei der postoperativen lumbalen Katheter-Epiduralanalgesie erschweren hohe Lokalanästhetika-Konzentrationen mit ausgeprägter motorischer Blockade die Diagnose intraspinaler Raumforderungen. Zur postoperativen Epiduralanalgesie sind Lokalanästhetika daher nur in niedriger Konzentration einzusetzen. Bis zum Ausschluss des Gegenteils begründet nach rückenmarksnaher Regionalanästhesie jede Zunahme der motorischen Blockade den Verdacht auf eine spinale Raumforderung (z.B. Hämatom oder Abszess). Weitere Kardinalsymptome sind Rückenschmerzen, Wurzelkompressionsschmerzen und Inkontinenz. Nur die sofortige Diagnose (MR, CT oder Myelographie) und Therapie (ggf. operative Entlastung) kann katastrophale neurologische Schäden verhindern.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s001010070089
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    Auswirkungen von Luftbläschen in der Infusionsspritze auf die Funktion von Spritzenpumpen (2000)
    Springer
    Der Anaesthesist 49 (2000), S. 1018-1023 
    Details
    ISSN: 1432-055X
    Keywords: Schlüsselwörter Infusionssysteme ; Spritzenpumpen ; Luft ; Fehlerquellen ; Gefahren ; Keywords Syringe pumps ; Air ; Infusion line occlusion ; Drug delivery ; Complications
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Abstract Application of highly concentrated short-acting vasoactive drugs in the critically ill patient requires precisely working syringe pump systems for continuous intravenous drug delivery. We performed a bench study to investigate the consequences of small amounts of air entrapped within a 50-ml infusion syringe. In particular we studied the effect of entrapped air on drug delivery after moderate vertical displacement of the pump by 50 cm (e. g. in preparation for transport) and the effect on the time required to trigger the pressure alarm after occlusion of the infusion line. At a flow rate of 1 ml/h, lowering the syringe pump prolonged the zero-drug delivery time from (mean±SD) 4.1±0.8 min (without air) to 6.2±0.9 (with 1 ml air) and to 13.1±0.9 min (with 2 ml of air, p〈0.001 for all comparisons). Entrapping of 2 ml of air within the syringe resulted in a 2.6-fold prolongation of the occlusion alarm time after accidental occlusion of the infusion line and a 3-fold increase of the resulting infusion bolus after occlusion. Enclosed air within infusion syringes considerably affects the syringe compliance. It increases the susceptibility of constant drug delivery to vertical displacement of syringe pumps and impairs the occlusion alarm function. Therefore, any air in syringe of infusion pump systems should be carefully removed. To avoid infusion boluses of short-acting vasoactive drugs after accidental occlusions, the occluded infusion line should be released to ambient pressure first.
    Notes: Zusammenfassung Werden hochdosierte kreislaufwirksame Pharmaka mit kurzer Halbwertszeit bei niedrigen Flussraten appliziert (z. B. bei Neugeborenen oder in der Kinder-Herzchirurgie), so ist eine konstante Zufuhr des Medikaments für die hämodynamische Stabilität eine unabdingbare Voraussetzung. Wir untersuchten in einem experimentellen Modell den Einfluss von geringen Luftmengen in 50-ml-Infusionsspritzen auf die Konstanz der Flussrate und die Alarmfunktion in 2 klinisch relevanten Situationen: relative Niveauänderungen zwischen Spritzenpumpe und Patient (etwa bei Transport oder Umlagern) und akzidentieller Verschluss (etwa Abknicken) einer Infusionsleitung. Nach Absenken der Spritzenpumpe um 50 cm gegenüber dem Ausgangsniveau verlängerte sich die Zeit unterbrochener Medikamentzufuhr (wegen hydrostatischer, retrograder Aspiration) von 4,1 min ohne Lufteinschluss auf 6,2 min bei 1 ml und auf 13,1 min bei 2 ml Lufteinschluss. Bei akzidentiellem Verschluss verlängerte sich die Zeit bis zum Okklusionsalarm bei 2 ml Lufteinschluss um das 2,6fache auf über 1 h, der resultierende Bolus nach Aufheben des Verschlusses verdreifachte sich. Daher sollten bei der Zufuhr hochkonzentrierter Vasoaktiva nicht nur relative Lageveränderungen zwischen System und Patient vermieden, sondern jegliche eingeschlossene Luft konsequent evakuiert werden. Dies gilt gleichermassen für alle über dasselbe Katheterlumen infundierenden Perfusoren. Bei Erkennen eines Verschlusses ist es sinnvoll, das okkludierte Infusionssystem vom Patienten zu trennen und den Druckentlastungsbolus zu verwerfen, bevor der Verschluss aufgehoben wird.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s001010070016
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    Ciaglia Blue Rhino: Ein weiterentwickeltes Verfahren der perkutanen Dilatationstracheotomie (2000)
    Springer
    Der Anaesthesist 49 (2000), S. 202-206 
    Details
    ISSN: 1432-055X
    Keywords: Schlüsselwörter Perkutane Dilatationstracheotomie ; Ciaglia Blue Rhino ; Komplikationen ; Key words Percutaneous dilatational tracheostomy ; Ciaglia Blue Rhino ; Complications
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Abstract Objective: Elective tracheostomy has become an established treatment modality in modern intensive care medicine, and the number of percutaneously performed tracheostomies is steadily increasing. The Ciaglia Blue Rhino (CBR) represents another percutaneous technique in which the tracheostoma is formed by one-step dilation. Our study presents the technique itself and the early clinical experiences. Methods: In 20 adult patients on long-term ventilation, CBR was done. After puncture of the trachea in typical manner, dilation of the tracheostoma was achieved in one single step by means of a curved dilator with a special hydrophilic coating. Then, the tracheostomy tube was inserted over a curved loading dilator. Practicability and safety were determined as well as gas exchange during the procedure by means of arterial blood gas samples. Results: As a result of the dilator’s hydrophilic coating, dilation of the tracheostoma was rapidly achieved within 152±22 s, virtually free from resistance of the trachea or the cervical tissues. Complications such as bleeding, aspiration or postoperative infection of the stoma were not noted in any of our patients. Fractures of isolated tracheal cartilage rings were seen in 5 patients, however, no therapeutic intervention was necessary. In terms of perioperative gas exchange, pre- and postoperative levels of FiO2, PaO2, PaCO2 and the oxygenation index (PaO2/FiO2) did not change significantly. Conclusions: Based on our early clinical experience, Ciaglia Blue Rhino represents a new method that may combine the typical advantages of each of the other techniques for percutaneous tracheostomy (i.e. Ciaglia, Griggs, Fantoni) in one single technique. This method is distinguished by a high level of safety and practicability. However, further comparative trials need to be done before a definitive judgement can be made.
    Notes: Zusammenfassung Fragestellung: Die elektive Tracheotomie stellt in der modernen Intensivmedizin einen festen Bestandteil der Beatmungstherapie dar und wird zunehmend perkutan durchgeführt. Mit der Ciaglia Blue Rhino (CBR) steht nunmehr eine weitere perkutane Technik zur Verfügung, bei der zur Anlage des Tracheostomas nur noch ein einziger Dilatationsschritt erforderlich ist. Ziel der vorliegenden Untersuchung war es, die Technik der CBR und erste klinische Ergebnisse vorzustellen. Methodik: Bei 20 langzeitbeatmeten, erwachsenen Intensivpatienten wurde eine CBR durchgeführt. Nach Punktion der Trachea in typischer Weise erfolgt die Dilatation des Tracheostomas in einem Schritt mittels eines gebogenen Dilatators, der über eine spezielle hydrophile Beschichtung verfügt. Anschließend wird die Trachealkanüle über einen Führungsstab eingeführt. Neben Praktikabilität und Komplikationen der Technik wurde deren Einfluß auf den perioperativen Gasaustausch mittels Blutgasanalysen untersucht. Ergebnisse: Aufgrund der hydrophilen Beschichtung des Dilatators und der damit verbundenen nahezu widerstandslosen Bougierung gelang die Anlage des Tracheostomas im Mittel in 152±22 s. Akut interventionsbedürftige Komplikationen wie Blutungen, Aspiration oder eine postoperative Infektion des Tracheostomas wurden nicht beobachtet. Bei 5 Patienten kam es zu einer Fraktur einzelner Trachealspangen, die jedoch keine therapeutische Konsequenz hatte. Hinsichtlich des perioperativen Gasaustauschs ergaben sich keine Signifikanzen hinsichtlich der prä- und postoperativen Höhen von FiO2, paO2, paCO2 und des Oxygenierungsindex (paO2/FiO2). Schlussfolgerung: Die Ciaglia Blue Rhino-Technik könnte aufgrund dieser ersten klinischen Erfahrungen ein Verfahren darstellen, das die jeweiligen Vorteile der anderen perkutanen Tracheotomietechniken nach Ciaglia, Griggs und Fantoni in sich vereint. Diese weiterentwickelte Technik zeichnet sich durch hohe Praktikabilität und eine sehr rasche und sichere Durchführbarkeit aus. Zur endgültigen Bewertung dieses Verfahrens auch im Hinblick auf Spätkomplikationen müssen jedoch detaillierte Vergleichsstudien folgen.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s001010050815
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    Die Larynxmaske bei Adenotonsillektomie bei Kindern Gefährliche Spielerei oder medizinischer Fortschritt? (2000)
    Springer
    Der Anaesthesist 49 (2000), S. 706-712 
    Details
    ISSN: 1432-055X
    Keywords: Schlüsselwörter AT ; TE ; Larynxmaske ; Technik ; Komplikationen ; Keywords Adenotomy ; Tonsillectomy ; Laryngeal mask ; Technique ; Complications
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Abstract Anaesthesia both for adenotomy (AT) and for tonsillectomy (TE) frequently presents a challenge. On one hand, children scheduled for adenotomy often have upper airway infections and are thus at risk of laryngo- and bronchospasm; on the other hand the ENT surgeon and the anaesthetist have to share the “workspace” in the patient's mouth. Since the succinyl choline debate in the early 1990s, the question of the best muscle relaxant has gone hand in hand with that of the most appropriate means of securing the airway. The concept of the laryngeal mask as airway was initially greeted with scepticism. Following several years' use of the mask for this purpose in AT and TE in young children, we report our experience and summarise the literature on this topic. The laryngeal mask represents a safe alternative to intubation, provided there is close cooperation with the ENT surgeon.
    Notes: Zusammenfassung Die Narkosen zur Adenotomie, aber auch zur Tonsillektomie stellen für Anästhesisten immer wieder große Herausforderungen dar. Zum einen haben die Kinder, die zur Adenotomie anstehen, häufig Infekte der oberen Luftwege und sind damit laryngo- und bronchospasmusgefährdet, zum anderen müssen sich HNO-Arzt und Anästhesist den “Arbeitsraum” im Mund teilen. Seit der Succinylcholindebatte der frühen 90er-Jahre stellte sich mit der Frage nach dem geeigneten Muskelrelaxans die Frage nach der geeigneten Atemwegssicherung. Der Anwendung der Larynxmaske als Airway bei AT und TE wurde zunächst mit Skepsis begegnet. Nach langjähriger Anwendung der Larynxmaske zur Atemwegssicherung bei AT und TE im Kleinkindesalter wird hier nicht nur über Ergebnisse und langjährige Erfahrungen berichtet, sondern auch die Literatur zu diesem Thema zusammengefasst. Daraus ergibt sich, dass die Larynxmaske bei AT und TE eine sichere Alternative zur Intubation darstellt. Voraussetzung dazu ist jedoch eine gute Kooperation mit dem HNO-Arzt.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s001010070064
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    Pneumothorax bei der Vertikalen Infraklavikulären Blockade des Plexus brachialis Fallbericht einer seltenen Komplikation (2000)
    Springer
    Der Anaesthesist 49 (2000), S. 901-904 
    Details
    ISSN: 1432-055X
    Keywords: Schlüsselwörter Vertikale Infraklavikuläre Blockade ; Pneumothorax ; Komplikation ; Plexus brachialis ; VIP ; Keywords Vertical infraclavicular blockade ; Pneumothorax ; Complications ; Brachial plexus ; VIP
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Abstract A 50 year old female patient received anaesthesia of the arm by the vertical infraclavicular blockade of the plexus brachialis (VIP). Postoperatively an ipsilateral pneumothorax occured complicated by pleural effusion and a contralateral bronchopneumonia, which resolved completely after treatment. The blockade of the plexus was performed correctly, failures in determining the correct point of needle insertion could be excluded. Therefore a pneumothorax has to be regarded as a specific complication of the VIP, which might occur despite correct technique, and requires that the patient be informed of this eventuality. Nevertheless, the VIP is an important method due to its high success rate concerning blockade of the musculocutaneous nerve and tolerance of tourniquet. The risk of a pneumothorax is about 0.2 to 0.7%.
    Notes: Zusammenfassung Bei einer 50-jährigen Patientin wurde im Rahmen einer elektiven Operation an der Hand die Anästhesie durch die Vertikale Infraklavikuläre Plexus-brachialis Blockade (VIP) nach Kilka durchgeführt. Postoperativ kam es zum Auftreten eines ipsilateralen Pneumothorax, welcher durch einen Pleuraerguss und eine kontralaterale Bronchopneumonie kompliziert wurde. Unter invasiver Behandlung der Patientin kam es bezüglich aller Komplikationen zur restitutio ad integrum. Die Durchführung der Anästhesie war lege artis entsprechend der Erstbeschreibung, Fehler bei der Bestimmung der Punktionsstelle konnten mit größtmöglicher Wahrscheinlichkeit ausgeschlossen werden. Ein Pneumothorax bei der Vertikalen Infraklavikulären Plexus-brachialis Blockade stellt auch bei korrekter Durchführung unter Vermeidung von beschriebenen Kardinalfehlern ein methodenspezifisches und somit aufklärungspflichtiges Risiko dar. Der VIP ist dennoch eine wichtige Ergänzung der herkömmlichen Methoden zur Blockade des Plexus brachialis, da er sich durch eine hohe Erfolgsrate speziell im Bereich des N. musculocutaneus und in der Toleranz eines Tourniquets auszeichnet. Nach den bisherigen Erfahrungen ist von einem Pneumothoraxrisiko von 0,2–0,7% auszugehen.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s001010070044
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    Kombinierte Anästhesie mit Epiduralkatheter Eine retrospektive Analyse des perioperativen Verlaufs bei Patienten mit radikalen Prostatektomien (2000)
    Springer
    Der Anaesthesist 49 (2000), S. 949-959 
    Details
    ISSN: 1432-055X
    Keywords: Schlüsselwörter Kombinierte Anästhesie ; Thorakale Epiduralanästhesie ; Lumbale Epiduralanästhesie ; Prostatektomie ; Schmerztherapie ; Komplikationen ; Keywords Combined anaesthesia ; Thoracic epidural anaesthesia ; Lumbar epidural anaesthesia ; Prostatectomy ; Pain management ; Complications
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Abstract Patients requiring radical prostatectomy (rPE), including retroperitoneal lymphadenectomy are often aged and have coexisting cardiopulmonary diseases, increasing the risk of perioperative complications. The aim of the present study was to evaluate our perioperative anaesthesiologic regimen over the last five years, in terms of safety and patients comfort. Records of 433 patients who underwent rPE between 1994 and 1999 in our hospital were retrospectively reviewed. Patients were divided in those who received: 1. general anaesthesia (GA) alone, 2. a combination of lumbar epidural anaesthesia (LEA)+GA or, 3. thoracic epidural anaesthesia (TEA)+GA. General anaesthesia was performed as balanced anaesthesia, and epidural administered local anaesthetics were bupivacaine 0.25% or ropivacaine 0.2%, 8–12 ml/h. In terms of intra- and postoperative numbers of tachycardic and hypertensive episodes, a reduced stress response was observed under epidural anaesthesia (EA). Moreover, the weaning duration was shorter under EA and onset of gastrointestinal motility was found earlier ([h] GA: 50.6±11.1/ LEA: 39.3±13.6/ TEA:33.8±13.0). Furthermore, a trend to rarer phases of postoperative vomiting and a significant decrease of in hospital stay of about one day ([d] GA: 12.4±5.8/ LEA: 11.1±3.1/ TEA: 11.5±3.8) was observed. The duration of personnel binding in the OR did not differ significantly between GA and TEA ([min] GA: 222.9±43.5/ LEA: 238.2±41.8/ TEA: 227.0±46.2), but ICU stay was shortened under TEA. Besides this, TEA reduced the number of pathologic postoperative thorax-x-rays. Senso-motor blockades, decreases of SaO2 and cardiac complications were experienced more frequent under LEA as compared with TEA. Combination of GA and EA, especially TEA, appears to improve perioperative care of patients undergoing rPE, in terms of patients safety and comfort.
    Notes: Zusamenfassung Patienten, die sich einer radikalen Prostatektomie (rPE) einschließlich retroperitonealer Lymphadenektomie (rLA) unterziehen, haben aufgrund ihres Alters und ihrer Begleiterkrankungen ein erhöhtes perioperativen Risiko. Ziel dieser Untersuchung war es, den intra- und postoperativen Verlauf der standardisierten Operation rPE+rLA unter verschiedenen Anästhesieregimen zu analysieren. Krankenakten von 433 Patienten, die sich zwischen 1994 und 1999 in unserer Einrichtung einer rPE+rLA unterzogen, wurden retrospektiv ausgewertet. Die Patienten wurden nach dem durchgeführten Anästhesieverfahren eingeteilt: 1. Allgemeinanästhesie (AA), 2. Kombination lumbale Epiduralanästhesie (LEA)+AA, 3. thorakale Epiduralanästhesie (TEA)+AA. Für die intra- und postoperative Katheteranalgesie wurden Bupivacain 0,25% oder Ropivacain 0,2%, 8–12 ml/h verwendet. Die Allgemeinanästhesie wurde als balancierte Anästhesie durchgeführt. Diese retrospektive Erhebung zeigt unter epiduraler Analgesie, gemessen an Tachykardien und hypertensiven Episoden, eine reduzierte intra- und postoperative Stressantwort, kürzere Extubationszeiten, früheres Wiedereinsetzen der gastrointestinalen Motilität ([h] AA: 50,6±11,1/ LEA: 39,3±13,6/ TEA:33,8±13,0), tendenziell selteneres Erbrechen und eine um einen Tag verkürzte Krankenhausverweildauer ([d] AA: 12,4±5,8/ LEA: 11,1±3,1/ TEA: 11,5±3,8). Dabei war unter TEA die Dauer der Anästhesiepräsenz im OP-Bereich vergleichbar mit AA ([min] AA: 222,9±43,5/ LEA: 238,2±41,8/ TEA: 227,0±46,2), und der Wachstationsaufenthalt verkürzt. Daneben war unter TEA die Anzahl der auffälligen postoperativen Thoraxröntgenbefunde reduziert. Zum Erreichen einer der TEA vergleichbaren Analgesie mussten unter LEA häufiger sensomotorische Blockaden, saO2-Abfälle und tendenziell eine höhere Anzahl kardialer Komplikationen in Kauf genommen werden. Gemessen an den von uns erhobenen Parametern stellt damit die Kombination einer Allgemeinanästhesie, insbesondere mit thorakaler Epiduralanalgesie ein sicheres und auch betriebswirtschaftlich effizientes anästhesiologisches Vorgehen bei radikalen Prostatektomien dar.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s001010070030
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  • 74
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    Acute myelofibrosis: multifocal bone marrow infiltration detected by scintigraphy and magnetic resonance imaging (2000)
    Springer
    Annals of hematology 79 (2000), S. 275-278 
    Details
    ISSN: 1432-0584
    Keywords: Key words Acute myelofibrosis ; Acute megakaryoblastic leukemia ; Scintigraphy ; Magnetic resonance imaging ; Interferon gamma
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract  Acute myelofibrosis is a rare, malignant hematological disorder of unknown etiology with an inevitably fatal outcome. Here we present the study of a 63-year-old Caucasian man with acute onset of pancytopenia. Repeated bone marrow biopsies showed dense fibrosis and hypoplastic hematopoiesis raising various differential diagnoses of malignant and nonmalignant conditions. Bone marrow scintigraphy and magnetic resonance imaging (MRI) showed areas suggesting neoplastic infiltration, mainly in both femurs and tibias. Histological examination of a surgical biopsy of the left tibia revealed acute megakaryoblastic leukemia. As the patient refused polychemotherapy, therapy with interferon gamma was initiated but discontinued prematurely because of intolerable side effects. The presented case therefore suggests that the combination of bone marrow scintigraphy and MRI is a valuable diagnostic tool in patients presenting with myelofibrosis of unknown origin.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002770050593
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  • 75
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    Distinct non-collagen based cartilages comprising the endoskeleton of the Atlantic hagfish, Myxine glutinosa (2000)
    Springer
    Anatomy and embryology 202 (2000), S. 281-290 
    Details
    ISSN: 1432-0568
    Keywords: Key words Extracellular matrix ; cartilage ; bone ; evolution ; lamprey ; agnathan
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract  Previous evidence from our laboratories showed that collagen is not the major matrix protein of the cartilaginous endoskeleton of the lamprey (Petromyzon marinus). Here we have characterized the cartilage matrix proteins of the only other extant agnathan, the hagfish (Myxine glutinosa). Using morphological, immunochemical and biochemical methods, we show that the structural proteins of the cartilaginous endoskeleton of the hagfish are also non-collagenous in nature. Although these hagfish cartilage proteins share properties both with each other and with lamprey cartilage proteins, including resistance to solubilization with cyanogen bromide and an usual amino acid composition rich in glycine and non-polar amino acids, it is clear that at least two and probably more hagfish cartilage proteins can be distinguished, with distinct distributions in different cartilage structures. Furthermore, in spite of their similarities, matrix proteins from hagfish cartilage are not identical to the proteins we have previously characterized in lamprey cartilage. These results suggest the existence of a larger family of similar but not identical proteins that form the major structural elements of cartilage tissues of agnathans. These data also support our previous conclusion that type II collagen became the predominant structural protein of cartilage only after the divergence of the agnathans from the ancestral line of the vertebrates.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s004290000113
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  • 76
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    Functional organization of the human masseter muscle (2000)
    Springer
    Surgical and radiologic anatomy 22 (2000), S. 181-190 
    Details
    ISSN: 1279-8517
    Keywords: Masseter muscle ; Architecture ; Magnetic resonance imaging
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The authors carried out an anatomic and magnetic resonance imaging study of the architecture of the elevator muscles of the mandible in 169 cadavers. The aim of this study was to define the architectural organization of the human masseter muscle, temporalis and pterygoid muscles. Layered dissections and anatomic sections in different spatial planes showed that the masseter muscle exhibited a typical pennate structure consisting of a succession of alternating musculoaponeurotic layers. The muscle had three well-differentiated parts the superficial, intermediate and deep masseter muscles. The same pattern was constantly found 1) for the superficial masseter, two alternate musculoaponeurotic layers oriented at 60∘ in relation to the plane of occlusion, 2) for the intermediate masseter, a single musculo-aponeurotic layer oriented at 90∘ in relation to the occlusal plane, 3) for the deep masseter, three musculoaponeurotic layers whose general orientation was at 90∘ for the bounding layers and 110∘ for the intermediate layer. The MRI study confirmed the reality of this architectural arrangement.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s00276-000-0181-5
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  • 77
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    Lasertherapie in der Dermatologie und Ästhetischen Medizin Nebenwirkungen, Komplikationen und Behandlungsfehler (2000)
    Springer
    Der Hautarzt 51 (2000), S. 463-473 
    Details
    ISSN: 1432-1173
    Keywords: Schlüsselwörter Laser ; Nebenwirkungen ; Komplikationen ; Behandlungsfehler ; Keywords Laser ; Side effects ; Complications ; Treatment faults
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Abstract Many different laser systems are used in dermatology. To wisely choose the correct laser for a given problem, one must be aware of both the spectrum of disorders for which each laser is suited and the potential side effects. We compare the side effect and complication profiles of the common laser systems pointing out their possibilities and limitations. Typical treatment errors will be pointed out. Dermatological training, extensive experience in laser therapy and compliance with quality guidelines are prerequisites for safe and successful treatment.
    Notes: Zusammenfassung In der Dermatologie werden unterschiedliche Lasersysteme eingesetzt. Für die Anwender ist nicht nur das jeweilige Behandlungsspektrum von Bedeutung, sondern auch welche unerwünschten Reaktionen im Rahmen einer Laserbehandlung auftreten können. Das Nebenwirkungs- und Komplikationsprofil der gängigen Geräte wird in der vorliegenden Arbeit vorgestellt und verglichen, und deren Möglichkeiten und Grenzen werden dargestellt. Typische Behandlungsfehler werden aufgezeigt. Eine dermatologische Facharztausbildung, umfangreiche lasertherapeutische Erfahrungen sowie die Einhaltung und Erfüllung von definierten Qualitätsrichtlinien sind Voraussetzungen für ein sicheres Behandlungsergebnis.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s001050051155
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  • 78
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    Cortical malformations: a frequent cause of epilepsy in children (2000)
    Springer
    European journal of pediatrics 159 (2000), S. 555-562 
    Details
    ISSN: 1432-1076
    Keywords: Key words Epilepsy ; Cortical malformations ; Migration disorders ; Magnetic resonance imaging ; Brain development
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract In this review, a simplified scheme for classification of cortical malformations is introduced and illustrated based on the work of Barkovich et al. [8]. Detailed MRI studies identify cortical malformations as a major cause of epilepsy in children. Two aspects that are becoming increasingly important for the paediatrician are emphasised. First, knowledge of the genetic background of cortical malformations is necessary for appropriate genetic counselling. Although the majority of cortical malformations occur sporadically, recent studies have shown a familial pattern in specific epilepsy syndromes associated with cortical malformations. Second, the epilepsy becomes refractory to the common anti-epileptic drugs in many patients with cortical malformations so that epilepsy surgery should be considered. In this respect, the paediatrician can play a pivotal role in referring candidate patients for further specialised assessment. Conclusion The input of the paediatrician will become crucial to link clinical, genetic and neuro-imaging data in children with the great variety of possible cortical malformations.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s004310000452
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  • 79
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    Adult care in phenylketonuria and hyperphenylalaninaemia: the relevance of neurological abnormalities (2000)
    Springer
    European journal of pediatrics 159 (2000), S. S114 
    Details
    ISSN: 1432-1076
    Keywords: Key words Dietary therapy ; Magnetic resonance imaging ; Neurology ; Pathology ; Phenylketonuria ; AbbreviationsHPA hyperphenylalaninaemia ; 1H-MRS proton magnetic resonance spectroscopy ; Phe phenylalanine ; PKU phenylketonuria
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Neurological abnormalities in phenylketonuria were described before dietary treatment became possible. These included tremor, clumsiness, epilepsy, spastic paraparesis and occasionally extrapyramidal features. Neurological deterioration after childhood was recognised. Patients with neurological deterioration described recently have been late diagnosed or intellectually impaired or both. No early diagnosed patient who was well treated and of good intellectual outcome has yet shown neurological deterioration after stopping diet but it may happen. Conclusion The fascinating links between pathology, magnetic resonance imaging appearances, magnetic resonance spectroscopy results and clinical features are not yet clearly understood. Patients must understand the possible risks of stopping diet and make their choice. All patients need help, support and follow-up regardless of the choices they make over continuing diet.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/PL00014373
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  • 80
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    Osteochondroma: MR imaging of tumor-related complications (2000)
    Springer
    European radiology 10 (2000), S. 832-840 
    Details
    ISSN: 1432-1084
    Keywords: Key words: Osteochondroma ; Complications ; Chondrosarcoma ; Bone tumors ; MRI
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract. Osteochondromas can be complicated by mechanical irritation, compression or injury of adjacent structures, fracture, malignant transformation, and postoperative recurrence. Magnetic resonance imaging represents the most valuable imaging modality in symptomatic cases, because it can demonstrate typical features of associated soft tissue pathology, which can be differentiated from malignant transformation. Reactive bursae formation presents as an overlying fluid collection with peripheral contrast enhancement. Dislocation, deformation, and signal alterations of adjacent soft tissue structures can be observed in different impingement syndromes caused by osteochondromas. Magnetic resonance imaging provides excellent demonstration of arterial and venous compromise and represents the method of choice in cases with compression of spinal cord, nerve roots, or peripheral nerves, depicting changes in size, position, and signal intensity of the affected neural structures. Malignant transformation as the most worrisome complication occurs in approximately 1 % of solitary and 5–25 % of multiple osteochondromas. Magnetic resonance imaging is the most accurate method in measuring cartilage cap thickness, which represents an important criterion for differentiation of osteochondromas and exostotic (low-grade) chondrosarcomas. Cartilage cap thickness exceeding 2 cm in adults and 3 cm in children should raise the suspicion for malignant transformation. Finally, MR imaging can detect postoperative recurrence by depiction of a recurrent mass presenting typical morphological features of a cartilage-forming lesion.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s003300051014
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  • 81
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    Recurrence of non-Hodgkin's lymphoma isolated to the right masticator and left psoas muscles (2000)
    Springer
    European radiology 10 (2000), S. 841-843 
    Details
    ISSN: 1432-1084
    Keywords: Key words: Lymphoma ; Magnetic resonance imaging ; Skeletal muscle
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract. We present the clinical and magnetic resonance imaging findings of a patient who, following treatment for pancreatic non-Hodgkin's lymphoma (NHL), relapsed with apparently isolated involvement of the right masticator space and left psoas muscles. Non-Hodgkin's lymphoma arising from the masticator space muscles is very rare. In addition, simultaneous lymphomatous involvement of multiple discrete skeletal muscle sites, in the absence of disease elsewhere, has previously only been reported in the limb or limb girdle muscles. Lymphoma should be considered as a cause of isolated enlarged skeletal muscles, even when involving such distant sites.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s003300051015
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  • 82
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    Implanted central venous catheter-related acute superior vena cava syndrome: management by metallic stent and endovascular repositioning of the catheter tip (2000)
    Springer
    European radiology 10 (2000), S. 1329-1331 
    Details
    ISSN: 1432-1084
    Keywords: Key words: Central venous catheters ; Venous obstruction ; Vena cava ; Interventional procedure ; Catheters and catheterization ; Complications
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract. We describe a case of a 49-year-old woman with stage-IIIB lung adenocarcinoma who experienced an acute superior vena cava syndrome related to an implanted central venous catheter without associated venous thrombosis. The catheter was surgically implanted for chemotherapy. Superior vena cava syndrome appeared after the procedure and was due to insertion of the catheter through a subclinical stenosis of the superior vena cava. Complete resolution of the patient's symptoms was obtained using stent placement and endovascular repositioning of the catheter tip.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s003300000361
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  • 83
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    Risikofaktoren für das Auftreten von lokalen Komplikationen beim Erysipel (2000)
    Springer
    Der Hautarzt 51 (2000), S. 14-18 
    Details
    ISSN: 1432-1173
    Keywords: Schlüsselwörter ; Erysipel ; Komplikationen ; Diabetes mellitus ; Hepatopathien ; Nephropathien ; Key words ; Erysipelas ; Complications ; Diabetes mellitus ; Hepatopathy ; Nephropathy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Summary Background and objective: A complicated course of erysipelas is not uncommon. Bullous, haemorrhagic, necrotic and purulent lesions may be encountered. Today no reliable data exist as to which constitutional factors renders a patient at risk for developing complicated erysipelas though several risk factors, particularly diabetes mellitus, are often suggested. Based on the analysis of patients with erysipelas at the Department of Dermatology in Graz, factors determining the risk for complicated erysipelas should be identified. Patients/Methods: In a retrospective case-control study clinical data sheets of 766 in- patients treated at the department were evaluated with respect to the course of the erysipelas and with respect to potential risk factors. Results: General risk factors for local complications were location at the lower extremities, pre-existing hepatic or renal disease, hyperuricaemia, and diabetes mellitus. Hepatic and renal disease and – to a lesser extent – diabetes particularly predisposed for bullous and haemorrhagic lesions, while vascular occlusive disease enhanced the risk for ne- crotic lesions. Conclusions: Location and hepatic and renal disease are the most important risk factors, while diabetes is probably of less significance than previously suggested.
    Notes: Zusammenfassung Hintergrund und Fragestellung: Im Zuge eines Erysipels treten immer wieder Lokalkomplikationen (Blasen, Hämorrhagien, Nekrosen, Abszesse) auf. Derzeit gibt es keine verlässlichen Daten darüber, aufgrund welcher Merkmale ein Patient als komplikationsgefährdet einzustufen ist, wobei aber verschiedene Risikofaktoren, insbesondere Diabetes mellitus, vermutet werden. Anhand des Patientenguts der Grazer Hautklinik sollten klinische Risikofaktoren für einen komplizierten Erysipelverlauf erhoben werden. Patienten/Methodik: In einer retrospektiven Fall-Kontroll-Studie wurden von 766 Patienten, die in den Jahren 1986–1995 wegen eines Erysipels stationär behandelt worden waren, klinische Daten hinsichtlich Erysipelverlauf und möglicher Risikofaktoren erhoben und statistisch ausgewertet. Ergebnisse: Das Risiko eines komplizierten Erysipelverlaufs wird allgemein durch Lokalisation am Bein, durch Leber- und Nierenerkrankungen, Hyperurikämie und durch einen Diabetes mellitus erhöht. Lebererkrankungen und – in geringerem Maße Diabetes – disponieren speziell zu bullösen und hämorrhagischen Verläufen, eine periphere arterielle Verschlusskrankheit zu nekrotischen Läsionen. Schlussfolgerungen: Betroffene Körperregion sowie Leber- und Nierenerkrankungen scheinen die wichtigsten Risikofaktoren zu sein, während der Diabetes mellitus möglicherweise eine geringere Rolle spielt, als bisher angenommen.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s001050050004
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  • 84
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    Sleep-related breathing disorders following discharge from intensive care (2000)
    Springer
    Intensive care medicine 26 (2000), S. 426-433 
    Details
    ISSN: 1432-1238
    Keywords: Key words Outcomes ; Hypoxaemia ; Sleep-related breathing disorders ; Obstructive sleep apnoea ; Central sleep apnoea ; Mechanical ventilation ; Complications ; Intensive care
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Objectives: To determine the incidence of sleep-related breathing disorders and nocturnal hypoxaemia in patients discharged from ICU following prolonged mechanical ventilation.¶Design: Prospective, consecutive patient observational study.¶Setting: The medical and surgical wards of a University Hospital.¶Patients and participants: Fifteen consecutive, adult patients discharged from the ICU who had received more than 48 h of mechanical ventilation were studied. Ten healthy volunteers acted as controls.¶Measurements and results: Overnight, multi-channel pneumographic studies were performed on all patients and controls. Chest and abdominal wall movement, air flow, oxygen saturation and snoring were continuously recorded. Data was analysed by both visual inspection of the traces and by computer-based algorithms. An apnoea/hypopnoea index was calculated for each patient and volunteer. Volunteers had an apnoea/hypopnoea index of less than 5 and had no episodes of nocturnal oxygen desaturation (SaO2 〈 90 %). Despite oxygen therapy 13/15 patients had episodes of desaturation and 9/15 spent more than 2 h with an SaO2 〈 90 %. Eleven patients had an abnormal apnoea/hypopnoea index (range 5–34 events/h). Four patients had predominantly obstructive events while 7 primarily had hypopnoeas.¶Conclusions: Significant overnight oxygen desaturation is common in patients discharged from ICU who have received prolonged mechanical ventilation. This group also has a significant incidence of sleep-related breathing disorders and this mechanism is likely to be important in the pathogenesis of the hypoxaemia.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s001340051177
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  • 85
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    Translaryngeal tracheostomy: two modified techniques versus the basic technique – early experience in 75 critically ill adults (2000)
    Springer
    Intensive care medicine 26 (2000), S. 457-461 
    Details
    ISSN: 1432-1238
    Keywords: Key words Tracheostomy: percutaneous, translaryngeal ; Complications ; Oxygenation ; Intensive care medicine
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Objectives: Elective tracheostomy is an established procedure in the management of ICU patients on long-term ventilation. In addition, percutaneous tracheostomy techniques are increasingly being used. In 1997, Fantoni's translaryngeal technique (TLT), another minimally invasive procedure, was introduced. While clinical studies of TLT showed that the technique is safe and can be performed rapidly, technical difficulties which sometimes led to prolonged operating times were also noted. Our study compared the basic TLT technique to a modified TLT approach and to TLT performed with the manufacturer's new, improved “Straight Cannula” set. Twenty-five patients were enrolled in each group, and the advantages and disadvantages of the respective techniques were evaluated.¶Setting: Surgical ICU of a university hospital.¶Patients: Seventy-five adult, surgical intensive care patients.¶Measurements and results: Average operating times with the modified TLT techniques were significantly shorter, 4 and 5 min respectively, as compared to 11 min for the basic TLT technique. Initially, use of the new, improved TLT set resulted in a complete passage of the tracheal cannula in two patients; uneventful Griggs's tracheostomy was performed instead. Regardless of the technique used, no other perioperative complications were noted and the perioperative gas exchange remained unaffected by the tracheostomy procedure.¶Conclusions: The modified TLT procedures are safer and more readily performed than the basic technique. Difficulty in the retrograde passage of the guide wire was seen only occasionally with the modified techniques. Based on our data we conclude that the modified techniques are superior to the basic technique and represent significant progress in TLT.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s001340051181
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  • 86
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    Delay of extubation in neonates and children after cardiac surgery: impact of ventilator-associated pneumonia (2000)
    Springer
    Intensive care medicine 26 (2000), S. 942-949 
    Details
    ISSN: 1432-1238
    Keywords: Key words Ventilator-associated pneumonia ; Cardiac surgery ; Children ; Pediatric intensive care ; Complications ; Extubation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Objective: This study was undertaken to determine the delay of extubation attributable to ventilator-associated pneumonia (VAP) in comparison to other complications and complexity of surgery after repair of congenital heart lesions in neonates and children.¶Methods: Cohort study in a pediatric intensive care unit of a tertiary referral center. All patients who had cardiac operations during a 22-month period and who survived surgery were eligible (n = 272, median age 1.3 years). Primary outcome was time to successful extubation. Primary variable of interest was VAP. Surgical procedures were classified according to complexity. Cox proportional hazards models were calculated to adjust for confounding. Potential confounders comprised other known risk factors for delayed extubation.¶Results: Median time to extubation was 3 days. VAP occurred in 26 patients (9.6 %). The rate of VAP was not associated with complexity of surgery (P = 0.22), or cardiopulmonary bypass (P = 0.23). The adjusted analysis revealed as further factors associated with delayed extubation: other respiratory complications (n = 28, chylothorax, airway stenosis, diaphragm paresis), prolonged inotropic support (n = 48, 17.6 %), and the need for secondary surgery (n = 51, 18.8 %; e. g., re-operation, secondary closure of thorax). Older age promoted early extubation. The median delay of extubation attributable to VAP was 3.7 days (hazards ratio HR = 0.29, 95 % CI 0.18–0.49), exceeding the effect size of secondary surgery (HR = 0.48) and other respiratory complications (HR = 0.50).¶Conclusion: VAP accounts for a major delay of extubation in pediatric cardiac surgery.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s001340051285
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  • 87
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    MRI demonstration of intracerebral cryptococcal granuloma (2000)
    Springer
    Neuroradiology 42 (2000), S. 30-33 
    Details
    ISSN: 1432-1920
    Keywords: Key words Granuloma cryptococcal ; Magnetic resonance imaging ; Pulse sequences
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract We report an intracerebral cryptococcal granuloma in a patient who presented with recent memory disturbance and deteriorating mental status followed by temporary loss of consciousness. To our knowledge, this is the first reported case of an intracerebral cryptococcal granuloma examined by a combination of conventional MRI, fluid-attenuated inversion-recovery and diffusion-weighted imaging and in which the surgical specimen was analysed histochemically.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002340050006
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  • 88
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    MRI of intracranial toxoplasmosis after bone marrow transplantation (2000)
    Springer
    Neuroradiology 42 (2000), S. 14-18 
    Details
    ISSN: 1432-1920
    Keywords: Key words Bone marrow, transplantation ; Toxoplasmosis, cerebral ; Magnetic resonance imaging
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Toxoplasma encephalitis was confirmed by biopsy in three patients with bone marrow (BMT) or peripheral blood stem-cell transplantation (PBSCT). All had MRI before antimicrobial therapy. The intensity of contrast enhancement was very variable. One patient had one large, moderately enhancing cerebral lesion and several smaller almost nonenhancing lesions. The second had small nodular and haemorrhagic lesions without any enhancement. The third had late cerebral toxoplasmosis and showed multiple lesions with marked contrast enhancement. The moderate or absent contrast enhancement in the two patients in the early phase of cerebral toxoplasmosis may be related to a poor immunological response, with a low white blood cell count in at least one patient. Both received higher doses of prednisone than the patient with late infection, leading to a reduced inflammatory response. In patients with a low leukocyte count and/or high doses of immunosuppressive therapy, typical contrast enhancement may be absent.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002340050003
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  • 89
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    Electronic Resource
    Cranial MRI in the Nijmegen breakage syndrome (2000)
    Springer
    Neuroradiology 42 (2000), S. 43-47 
    Details
    ISSN: 1432-1920
    Keywords: Key words Nijmegen breakage syndrome ; Anomalies of brain ; Magnetic resonance imaging
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract We present the results ¶of MRI examinations in ten patients with documented Nijmegen ¶breakage syndrome (NBS), aged 1.75–19 years. T1-, Proton-Density- and T2-weighted spin-echo sequences were performed in three planes. All patients showed microcephaly with decreased size of the frontal lobes and narrow frontal horns. In four patients agenesis of the posterior part of the corpus callosum was found, with colpocephaly and temporal horns dilatation. In one patient callosal hypoplasia was accompanied by abnormal cerebrospinal fluid spaces and wide cerebral cortex, suspicious of pachygyria. Sinusitis was present in all ten patients, as a result of primary immunodeficiency. As in ataxia teleangiectasia and other breakage syndromes, patients with NBS show an inherited susceptibility to malignancy and hypersensitivity to X- and γ-radiation. CT is therefore contraindicated in these patients and MRI should be the method of choice for diagnostic imaging.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002340050011
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  • 90
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    Dermal sinus with dermoid cyst in the upper cervical spine: case note (2000)
    Springer
    Neuroradiology 42 (2000), S. 51-53 
    Details
    ISSN: 1432-1920
    Keywords: Key words Sinus dermal ; Cyst dermoid ; Magnetic resonance imaging
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract We describe a 5 year-old girl who had a skin dimple of the back of her upper neck. MRI showed a dermal sinus tract in the upper cervical spine, associated with an intramedullary dermoid cyst at C 2–3, and spina bifida. A laminectomy was performed, the dermoid cyst and the sinus tract were completely removed. This congenital complex is very rare.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002340050013
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  • 91
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    MRI T-staging of laryngeal tumours: role of contrast medium (2000)
    Springer
    Neuroradiology 42 (2000), S. 66-71 
    Details
    ISSN: 1432-1920
    Keywords: Key words Larynx, tumours ; Magnetic resonance imaging ; Contrast medium
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Our aim was to evaluate the relative diagnostic accuracy of MRI without contrast medium and MRI before and after contrast medium in the assessment of T-staging of laryngeal tumours. We studied 25 men (mean age 51.8, range 41–61) with laryngeal squamous cell carcinomas, using Spin-echo (SE) T1-weighted and fast SE T2-weighted sequences. The T1-weighted sequences were then repeated after gadolinium-diethylene-triaminepenta-acetic acid (Gd DTPA) 0.1 ml/kg. All patients then underwent biopsy and surgery. Two radiologists independently assessed the anonymised images by filling-out two multiple-choice forms, one for each technique, at a 2 week interval. The forms included a judgement concerning tumour identification and infiltration of the anterior commissure, supraglottic region, arytenoid cartilage, Morgagni's ventricle, paraglottic space, thyroid and cricoid cartilages, thyro-hyo-epiglottic space, vocal cords, subglottic region, and epiglottis. Similar forms were filled out by the surgeon and the pathologist after surgery. The sensitivity, specificity and diagnostic accuracy of MRI were unaffected by the use of contrast medium. Since it did not provide additional staging information, its continued routine use in these cases is not justified.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002340050017
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  • 92
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    Electronic Resource
    Bilateral thalamic glioma: case report (2000)
    Springer
    Neuroradiology 42 (2000), S. 732-734 
    Details
    ISSN: 1432-1920
    Keywords: Key words Glioma, thalamic, bilateral ; Magnetic resonance imaging ; Magnetic resonance spectroscopy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract We report a 63-year-old man who had a rare bilateral thalamic glioma. He complained of difficulty with calculations and had mental deterioration. T1-weighted images revealed bilateral thalamic swelling with homogeneous low signal and no contrast enhancement. The tumour, showing decrease of N-acetylaspartate and the presence of lactate on magnetic resonance spectroscopy, was diagnosed as an astrocytoma by stereotactic biopsy.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002340000380
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  • 93
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    Electronic Resource
    Primary central nervous system immunocytoma: MRI and spectroscopy (2000)
    Springer
    Neuroradiology 42 (2000), S. 738-741 
    Details
    ISSN: 1432-1920
    Keywords: Key words Lymphoma ; Central nervous system ; Immunocytoma, cerebral ; Magnetic resonance imaging ; Magnetic resonance spectroscopy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract We report on a young woman with a primary cerebral immunocytoma. Most primary cerebral nervous system lymphomas (PCNSL) are highly malignant undifferentiated B-cell tumours, there are few data on the clinical course, MRI and spectroscopy findings of this rare PCNSL subtype. MRI revealed a radially enhancing tumour with mild perifocal oedema. MR spectroscopy indicated low cell turnover. Slow clinical progression, no significant changes with treatment, and imaging findings were consistent with a low-grade malignant tumour.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002340000392
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  • 94
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    Electronic Resource
    MRI in tick-borne encephalitis (2000)
    Springer
    Neuroradiology 42 (2000), S. 753-755 
    Details
    ISSN: 1432-1920
    Keywords: Key words Encephalitis, tick-borne ; Magnetic resonance imaging ; Basal ganglia ; Thalamus
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The tick-borne encephalitis (TBE) virus gives rise to epidemic encephalitis. Mild forms usually manifest as influenza-like episodes or are clinically silent. MRI is usually normal in TBE. We describe severe TBE in a patient who presented with fever and altered mental status after a tick bite and a specific antibody response to TBE. MRI revealed pronounced signal abnormalities in the basal ganglia and thalamus, without contrast enhancement. These findings coincide well with neuropathological studies of severe nerve cell degeneration with inflammatory cell infiltrates, neuronophagia and reactive astrocytosis in the deep grey matter. We review the literature and discuss the relevant differential diagnosis.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002340000396
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  • 95
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    Electronic Resource
    Classification of acquired lesions of the corpus callosum with MRI (2000)
    Springer
    Neuroradiology 42 (2000), S. 795-802 
    Details
    ISSN: 1432-1920
    Keywords: Key words Corpus callosum ; Ischaemia ; Demyelination ; Magnetic resonance imaging
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract MRI has facilitated diagnostic assessment of the corpus callosum. Diagnostic classification of solitary or multiple lesions of the corpus callosum has not attracted much attention, although signal abnormalities are not uncommon. Our aim was to identify characteristic imaging features of lesions frequently encountered in practice. We reviewed the case histories of 59 patients with lesions shown on MRI. The nature of the lesions was based on clinical features and/or long term follow-up (ischaemic 20, Virchow-Robin spaces 3, diffuse axonal injury 7, multiple sclerosis 11, hydrocephalus 5, acute disseminated encephalomyelitis 5, Marchiafava-Bignami disease 4, lymphoma 2, glioblastoma hamartoma each 1). The location in the sagittal plane, the relationship to the borders of the corpus callosum and midline and the size were documented. The 20 ischaemic lesions were asymmetrical but adjacent to the midline; the latter was involved in new or large lesions. Diffuse axonal injury commonly resulted in large lesions, which tended to be asymmetrical; the midline and borders of the corpus callosum were always involved. Lesions in MS were small, at the lower border of the corpus callosum next to the septum pellucidum, and crossed the midline asymmetrically. Acute disseminated encephalomyelitis and the other perivenous inflammatory diseases caused relatively large, asymmetrical lesions. Hydrocephalus resulted in lesions of the upper part of the corpus callosum, and mostly in its posterior two thirds; they were found in the midline. Lesions in Marchiafava-Bignami disease were large, often symmetrically in the midline in the splenium and did not reach the edge of the corpus callosum.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002340000430
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  • 96
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    Electronic Resource
    Neuroradiological history: Sir Joseph Larmor and the basis of MRI physics (2000)
    Springer
    Neuroradiology 42 (2000), S. 852-855 
    Details
    ISSN: 1432-1920
    Keywords: Key words Larmor ; Joseph ; Magnetic resonance imaging ; Neurology history
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The origin of many of the eponymous terms in modern medicine is unknown to many people who utter them daily. As a contribution to understanding the historical background of MRI, we provide a brief account of the life and work of Joseph Larmor, the Irish scientist, whose name is frequently used by chemists, physicists and radiologists alike.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002340000400
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  • 97
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    Electronic Resource
    Gadolinium-myelocisternography for cerebrospinal fluid rhinorrhoea (2000)
    Springer
    Neuroradiology 42 (2000), S. 874-880 
    Details
    ISSN: 1432-1920
    Keywords: Key words Gadolinium-containing contrast medium ; Myelocisternography ; Cerebrospinal fluid leakage ; Magnetic resonance imaging
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Knowledge of the exact site of leakage of cerebrospinal fluid CSF leakage is important for planning surgery. We report our experience with myelocisternography with Gd-DTPA. We decided that intrathecal use of this contrast medium was justified in selected cases when other techniques have failed. After we had given detailed information to four patients with CSF leakage, they underwent five examinations. The images were interpreted by comparing those before and after injection. In all cases the contrast medium arrived at the basal cisterns, giving high contrast against adjacent structures. All patients tolerated the examination without complications or any indication of side effects.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002340000485
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  • 98
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    Electronic Resource
    Idiopathic granulomatous hypophysitis: are there reliable, constant radiological and clinical diagnostic criterias? (2000)
    Springer
    Neuroradiology 42 (2000), S. 890-894 
    Details
    ISSN: 1432-1920
    Keywords: Key words Pituitary ; Hypophysitis, granulomatous ; Magnetic resonance imaging
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Idiopathic granulomatous hypophysitis is a rare inflammatory disease of unknown aetiology; few cases are reported. We review the clinical presentation and radiological characteristics of these cases and our own experience with three new surgical cases, to determine diagnostic criteria. MRI of three cases revealed sellar lesions extending into the chiasmatic cistern. Their shape varied, from dumbbell to spherical and elliptical. All were isointense with the brain on T1-weighted images and gave heterogeneously high signal on T2-weighted images. Contrast enhancement was homogeneous in one case and heterogeneous in another. The pituitary stalk could not be identified. There was no dural enhancement. The sphenoid sinus mucosa was thickened in two cases and normal in one.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002340000481
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  • 99
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    Electronic Resource
    A case of ochronosis: MRI of the lumbar spine (2000)
    Springer
    Neuroradiology 42 (2000), S. 905-907 
    Details
    ISSN: 1432-1920
    Keywords: Key words Alkaptonuria ; Ochronosis ; Spine ; Magnetic resonance imaging
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract We present the MRI features of the lumbar spine in a patient with ochronosis.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002340000428
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  • 100
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    Electronic Resource
    Primary malignant lymphoma of the maxillary sinus: CT and MRI (2000)
    Springer
    Neuroradiology 42 (2000), S. 285-289 
    Details
    ISSN: 1432-1920
    Keywords: Key words Lymphoma ; malignant ; Sinus ; maxillary ; Magnetic resonance imaging ; Computed tomography.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract We reviewed the CT and MRI of seven patients with primary malignant lymphoma of the maxillary sinus to find if there are characteristic imaging findings suggestive of the disease. The images were analysed for appearance, size, signal, internal characteristics, extent of tumour, bone change and lymph node enlargement. In two patients, the tumour first presented with mucosal thickening. In the remaining five, the tumours were an expansile mass 4–6 cm in diameter at the time of detection. Although it was difficult to distinguish tumour from mucosa or obstructed fluid on CT, T2-weighted MRI enabled us to separate tumour from normal mucosa or fluid. In two patients, the tumours were heterogeneous. Calcification and haemorrhage were observed in one patient. Periantral soft-tissue infiltration was always present, even when tumour appeared as slight mucosal thickening. Posterior extension was seen in all patients. Permeative and lytic bone destruction accompanied most cases of periantral soft-tissue infiltration; mixed destruction and sclerosis was also observed. Mucosal thickening with periantral soft-tissue infiltration may suggest malignant lymphoma of the maxillary sinus in its early form. Various types of bone change may accompany the periantral soft-tissue infiltration.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002340050887
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