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  • 1
    Electronic Resource
    Electronic Resource
    s.l. ; Stafa-Zurich, Switzerland
    Advances in science and technology Vol. 56 (Sept. 2008), p. 122-126 
    ISSN: 1662-0356
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Natural Sciences in General , Technology
    Notes: A hardware-software interface for smart electroactive pressure sensors has been designedwith the objective of providing a low power consumption and high performance impact monitoringsystem, integrated in new smart structures. The interface is specifically designed for its use withdistributed pressure sensors based on conductive polymers. Their low cost and flexibility makethem suitable for placing on large surfaces. The smart sensor integrates a microprocessor, a radiochip and a complete analog front end based on a period-modulated oscillator. The softwaredeveloped implements new interface applications for this hardware in TinyOS. The response of thesensor, both loading and unloading, to different impact energies first, and then to different probestiffness is presented. The behaviour of the sensor to impact is also compared to the response instatic, and the different factors affecting the sensor response in both conditions are described.Comparing and contrasting the sensor signal with that of an impact pendulum shows that the sensoris suitable for measuring impact in both flexible and rigid structures
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Hernia 1 (1997), S. 101-110 
    ISSN: 1248-9204
    Keywords: Inguinal hernia ; Anatomy ; Preperitoneal fascia ; Transversalis fascia ; Laparoscopy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Until the relatively recent interest in laparoscopic preperitoneal hernia repairs, most Surgeons in the United States and in many other countries performed open anterior repairs. There was little reason to study the preperitoneal anatomy. Surgeons involved with laparoscopic and open preperitoneal hernia repairs work in the preperitoneal fascial planes and transversalis fascia that has not been well described in the current English literature. We have carefuly studied the preperitoneal fasciae and posterior rectus sheath using the excellent perspective, lighting and magnification afforded by the laparoscopic approach. The preperitoneal fascias are distinct from the transversalis fascia with a separate blood supply. The transversalis fascia in the inguinal space is likely related to the posterior rectus fascia. We attempt to clarify the anatomy of the fasciae in this area with laparoscopic photographs and validate our observations with review of the literature and selected illustrations taken from anatomical texts.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Contact dermatitis 24 (1991), S. 0 
    ISSN: 1600-0536
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 4
    ISSN: 1432-2218
    Keywords: Key words: Laparoscopic ultrasound—Intraoperative cholangiogram—Digital fluorocholangiogram—Laparoscopic cholecystectomy—Choledocholithiasis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Background: Laparoscopic ultrasound is an alternative to operative cholangiogram for evaluation of the common bile duct (CBD) during laparoscopic cholecystectomy. It is a safe, fast, and reliable method for detecting choledocholithiasis. Methods: We prospectively evaluated the sensitivity and specificity of laparoscopic ultrasound (LUS) and digital fluorocholangiogram (DFCG) in a three-phase study of 360 consecutive patients. Results: In phase I, 140 patients undergoing laparoscopic cholecystectomy had LUS performed first, followed by DFCG. Thirteen patients had CBD calculi identified on LUS. Four patients with confirmed (two cases) or presumed (two cases) CBD calculi on DFCG were not identified on LUS. Thus, the specificity of LUS was 100%, whereas the sensitivity was 76.5%. DFCG had four false positives, for a sensitivity of 100% with a specificity of 96.7%. LUS was performed, on average, in 6.6 min, whereas DFCG required 10.9 min to perform. In phase II, the infusion of saline through a cystic duct catheter was performed in instances where the distal CBD could not be well seen. This maneuver distended the intrapancreatic portion of the CBD, allowing better visualization. Nine stones were identified on LUS in 78 patients, increasing the sensitivity to 100%. One false positive DCFG was encountered, resulting in a sensitivity of 100% and a specificity of 98.6%. In phase III, we performed routine LUS and used DFCG only in select cases. The sensitivity and specificity for LUS were 95.7% and 100%, respectively, whereas DFCG had a sensitivity of 95.2% and a specificity of 100%. One patient in phase III has returned 11 months post-op with a CBD stone. This was initially missed on LUS, DFCG, and postoperative ERCP. The sensitivity and specificity in all 360 patients were 90% and 100% for LUS and 98.1% and 98.1% for DFCG, respectively. A total of five CBD stones were missed by LUS, four early in the study (phase I). One missed on LUS in phase III was also missed by DFCG and ERCP. Conclusions: LUS is a reliable alternative to DFCG during laparoscopic cholecystectomy (LC). With experience, it is as sensitive as DFCG and more specific. It is more rapidly performed than cholangiography.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Surgical endoscopy and other interventional techniques 13 (1999), S. 1093-1098 
    ISSN: 1432-2218
    Keywords: Key words: Laparoscopic adrenalectomy — Laparoscopic ultrasound — Adrenal glands
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Background: Laparoscopic adrenalectomy has been shown to be a safe and effective therapy for benign adrenal lesions. We review our experience with this procedure, including the use of laparoscopic ultrasound. Methods: We retrospectively reviewed our experience with 36 patients who underwent resection of 42 adrenal glands. Data gathered included preoperative evaluation and diagnosis, operative time, blood loss, complications, and follow-up status. Laparoscopic ultrasound was used to guide dissection and characterize a variety of adrenal lesions. Results: Thirty-five of 36 patients underwent successful laparoscopic adrenalectomy. There was one conversion to the open procedure in a patient with bilateral adrenal metastases from an endometrial cancer. For the bilateral laparoscopic procedure, the operative time averaged 262 mins, blood loss was 160 cc, and hospital stay was 3.0 days. For unilateral cases, operative time averaged 193 min, blood loss was 108 cc, and hospitalization was 1.1 days. Six patients experienced perioperative complications, most of which were minor and transient. Laparoscopic ultrasound was useful to define anatomy and to identify the adrenal vein, especially on the left side. Conclusions: Laparoscopic adrenalectomy is the procedure of choice for benign adrenal disease. Laparoscopic ultrasound is useful to localize and aid in the dissection of the left adrenal vein.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Surgical endoscopy and other interventional techniques 10 (1996), S. 364-364 
    ISSN: 1432-2218
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 7
    ISSN: 1432-2218
    Keywords: Laparoscopic complications ; Inguinal hernia ; Laparoscopic herniorrhaphy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Although the laparoscopic technique is a new approach to groin hernia, it is becoming more widely accepted as an alternative to traditional open techniques. This study is a preliminary review of complications and recurrences. A questionnaire specific for complications was sent to each investigator. From 12/89 to 4/93, 1,514 hernias were repaired; 119 (7.8%) were bilateral and 192 (12.7%) recurrent. There were 860 indirect, 560 direct, 43 pantaloon, 37 femoral, and 6 obturator hernias, and 8 were not specified; 553 were repaired using a transabdominal preperitoneal mesh technique (TAPP), 457 with a total extraperitoneal technique (TEP), 320 with intraperitoneal onlay mesh (IPOM), 102 by ring closure, and 82 involved plug and patch technique. Eighteen intraoperative and 188 postoperative complications were seen. The total complication rate was 13.6%, of which 1.2% were intraoperative. Of the intraoperative complications, 12 were related to the laparoscopic technique, three were related to the hernia repair, and one was related to anesthesia. The rate of conversion to open was 0.8%. Of the postoperative complications, there were 95 local, 25 neurologic, 23 testicular, 23 urinary, 10 mesh, and 12 miscellaneous. There were 34 recurrences after the 1,514 hernia repairs (2.2%). The follow-up was reported in 828 patients for an average of 13 months. The recurrence rate varied drastically with the technique: A 22% recurrence rate after the plug and patch vs 3%, 2.2%, 0.7%, and 0.4% with the ring closure, IPOM, TAPP, and TEP, respectively. Laparoscopic repair of groin hernia can be safely performed. Complications, mostly minor, diminish with experience. The recurrence rate is less with large mesh which is anchored.
    Type of Medium: Electronic Resource
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  • 8
    ISSN: 1432-2218
    Keywords: Laparoscopic cholecystectomy ; Intraoperative ultrasound ; Laparoscopic ultrasound ; Intraoperative cholangiography ; Choledocholithiasis ; Common bile duct
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Indications for intraoperative evaluation of the common bile duct during laparoscopic cholecystectomy are controversial, as is the goal of either anatomic definition or assessing for choledocholithiasis. One hundred twenty-five consecutive patients undergoing laparoscopic cholecystectomy underwent both intraoperative ultrasound and intraoperative cholangiography. Cholangiography required slightly more time to perform; it was more sensitive (92.8% vs 71.4%) but less specific (76.2% vs 100%) for choledocholithiasis than was ultrasound. Ultrasound was somewhat more difficult to perform, and, particularly in the setting of intraabdominal obesity, was often inadequate at providing clear visualization of the intrapancreatic common bile duct. It did not provide the same anatomic definition as an adequate cholangiogram. The overall incidence of choledocholithiasis was 11.2%.
    Type of Medium: Electronic Resource
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  • 9
    ISSN: 1432-2218
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 10
    ISSN: 1432-2218
    Keywords: Laparoscopy ; Hernioplasty ; Technique ; Complications
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Smaller individual series on the outcome of laparoscopic hernioplasty techniques have been reported. This study reports on the complications of 3,229 laparoscopic hernia repairs performed by the authors in 2,559 patients. The TAPP (transabdominal preperitoneal) technique was the most frequently performed: 1,944 (60%). The totally preperitoneal technique was performed 578 (18%) times. The IPOM (intraperitoneal onlay mesh) repair was performed 345 (11%) times. The plug-and-patch technique was used 286 (9%) times and simple closure of the hernia defect without mesh was used in 76 (2%) repairs. Overall, there were 336 (10%) complications: 17 (0.5%) major and 265 (8%) minor. There were 54 (1.6%) recurrences, with a mean follow-up of 22 months. The TAPP technique had 19 (1%) recurrences and 141 (7%) complications. There were four bowel obstructions in this subgroup from herniation of small bowel through the peritoneal closure and trocar sites. The totally preperitoneal technique had no recurrence and 60 (10%) complications. The IPOM group had 7 (2%) recurrences and 47 (14%) complications. The plug-and-patch technique had 26 (9%) recurrences and 24 (8%) complications. The simple closure of the internal ring had 2 (3%) recurrences and 10 (13%) complications. Laparoscopic hernioplasty is not without complications. Training, experience, and attention to technique will prevent some of these complications.
    Type of Medium: Electronic Resource
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