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  • 1
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 150 (1942), S. 606-607 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] IN the west of Scotland, chlorosis of the leaves of tomato plants has been widespread during the past season and has been investigated at the West of Scotland Agricultural College, Auchincruive, Ayr. Abnormal leaves of affected plants showed a characteristic appearance; the vascular ...
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 158 (1946), S. 25-25 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] THE summary in Nature1 of the paper by Walsh and Clarke2 directs attention to the methods of treating tomato plants affected by induced magnesium deficiency. The paper emphasizes the importance in this connexion of the potash level in the soil, a relationship which ...
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 153 (1944), S. 656-656 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] DURING 1942, the variation in the composition of the bracken frond throughout its growing season was investigated in Perthshire at Ballochraggan, the bracken experimental area of the West of Scotland Agricultural College. A uniform 100 yards square area of hill bracken was chosen on typical ...
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Surgical endoscopy and other interventional techniques 11 (1997), S. 261 -263 
    ISSN: 1432-2218
    Keywords: Key words: Nissen fundoplication — Toupet fundoplication — Gastroesophageal reflux
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Background: The physiology of Nissen fundoplication (NF) and Toupet fundoplication (TF) is controversial. The aim of this study was to determine the contribution of elevated intragastric pressure to the antireflux mechanism after surgically created fundoplication in explanted porcine stomachs. Methods: The stomachs and 6–8 cm of distal esophagus were removed from 15 pigs and placed in anatomic position. Five NF, 2 cm in length with three interrupted sutures, were performed, taking full-thickness bites of stomach and partial-thickness bites of esophagus around a 60 French dilator. Five 270° TF 2 cm in length with six interrupted sutures were performed taking full-thickness bites of stomach and partial-thickness bites of esophagus around a 60 French dilator. Each stomach served as its own control. The pylorus was tied off and the stomach was inflated with Ringer's lactate while the pressure was monitored. Results: Before NF, reflux could be easily induced with a mean intragastric pressure of 5.5 ± 3.7 mmHg. After NF reflux could not be induced but the sutures pulled out of the stomach at a mean pressure of 36.8 ± 11.7 mmHg (p 〈 0.01 vs control). Before TF, reflux could easily be induced with a mean intragastric pressure of 3.0 ± 3.0 mmHg. After TF, reflux could not be induced and the sutures pulled out of the esophagus or stomach with a mean pressure of 30.8 ± 9.0 mmHg (p 〈 0.01 vs control). Porcine stomachs in vivo are resistant to reflux, but when explanted they reflux easily. NF and TF are so effective at interrupting reflux that the sutures tear out instead of allowing reflux. Conclusions: While not yet statistically significant, it appears that sutures tear out of the esophagus (TF) more readily than they tear out of the stomach (NF). TF and NF prevent reflux in the absence of anatomic or functional components of the lower esophageal sphincter.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Surgical endoscopy and other interventional techniques 11 (1997), S. 321 -325 
    ISSN: 1432-2218
    Keywords: Key words: Endoluminal surgery — Polyp — Pancreatic pseudocyst — Early gastric cancer
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Background: Progress in laparoscopic surgery and the employment of minimally invasive techniques have led to the emergence of a new branch in this field, laparoscopic endoluminal surgery (LES). Methods: LES encompasses all surgical procedures that involve intentional trocar or instrument penetration into the lumen of the gut in order to perform a surgical procedure. The integrity of the organ is preserved except for the small enterotomy sites and the operated area. The procedure is technically demanding and requires sound endoscopic skills. Results: The experience in LES has primarily involved the stomach and right colon for two reasons. First, these organs have a larger volume/surface ratio in the gut; therefore, they are accessible for the endoluminal instruments. Second, even limited resection of the stomach or colon can potentially carry a significant morbidity. LES minimizes the extent of this resection. Conclusions: In this paper we review recent developments in LES, discuss the technical aspects of the procedure, and recommend its applicability.
    Type of Medium: Electronic Resource
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  • 6
    ISSN: 1432-2218
    Keywords: Laparoscopic bile duct injury ; Routine intraoperative cholangiography ; Biliary tract
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Controversy over whether intraoperative cholangiography (IOC) should be done routinely has intensified since the advent of laparoscopic cholecystectomy (LC). As yet, no study has demonstrated a clear benefit to its use, although their have been suggestions in the literature that routine use may confer an advantage to detection of injuries. One-hundred seventy-seven biliary tract complications occurring secondary to LC were identified from the combined data of seven institutions. The goal of this retrospective study was to examine the impact of IOC on the occurrence, recognition, and correction of such complications. The complications identified include 39 cystic duct leaks, 69 major ductal leaks or strictures, and 69 major ductal transection or excision injuries. Whether IOC was performed was known in 157 (88%) patients with 53 patients definitely having and 104 not having an IOC. Data concerning IOC were unavailable in 20 cases. More injuries were detected intraoperatively in the group having IOC (P〈0.001). Conversion of the LC to a laparotomy, often for repair of the injury, occurred more commonly in the group having a correctly interpreted IOC (P〈0.001). Conversion resulted in detection of injuries sooner, resulting in fewer operative procedures to correct the injury (P〈0.001). A transecting injury was prevented in at least seven patients when no visualization of the proximal biliary tree was documented by IOC. These partial ductal incisions were treated by t-tube placement. Incorrect interpretation of the IOC occurred in at least eight patients, with no identification of the proximal biliary tree in six. These data suggest routine IOC may offer significant potential advantages in the detection and subsequent correction of these injuries, as well as preventing extension of partial ductal incisions to complete ductal transections. Surgeons must be able to correctly interpret the IOC. Although routine IOC is suggested, careful dissection principles continue to be most important in the prevention of major extrahepatic bile duct injuries during LC.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Surgical endoscopy and other interventional techniques 9 (1995), S. 164-168 
    ISSN: 1432-2218
    Keywords: Paraesophageal hernia ; Nissen fundoplication ; Sliding hiatal hernia
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Large paraesophageal hernias are generally repaired by reduction of the stomach into the abdomen, sac excision, crural closure, and gastropexy or fundoplication. After gaining experience performing laparoscopic repair of sliding hiatal hernias and Nissen fundoplication we combined laparoscopic access with traditional surgical technique in treating patients with complex paraesophageal hernias. Ten adults, six males and four females, with type III paraesophageal hernias underwent laparoscopic repair between February 1993 and April 1994. The average age of the patients was 60.4 years (range 38–81). Using five ports (three 10 mm and two 5 mm), the stomach was reduced into the abdomen, the hernia sac was resected, and the defect was closed with pledgeted horizontal mattress sutures. In addition, nine patients had a Nissen fundoplication performed and one patient had a diaphragmatic gastropexy. The procedure was completed laparoscopically in all ten cases and the median operating time was 282 min (range 165–430). Two complications occurred, an intraoperative gastric laceration, and a postoperative mediastinal seroma. All patients were discharged on the 2nd or 3rd postoperative day. Eight of nine patients were asymptomatic at last follow-up (mean 8.9 months postop). One patient has mild dysphagia and heartburn from partial migration of the fundoplication into the chest. One patient died 3 months postoperatively of unrelated causes. Paraesophageal hernia can be reduced and repaired safely with laparoscopic access using standard surgical techniques.
    Type of Medium: Electronic Resource
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  • 8
    ISSN: 1432-2218
    Keywords: Key words: Esophageal perforation — Anesthesia personnel — Laparoscopic foregut surgery
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Background: This study retrospectively assesses the mechanisms of 13 esophageal or gastric injuries resulting from dilator or nasogastric tube placement during laparoscopic foregut surgery and is intended to assist in determining methods of prevention. Methods: Information regarding esophageal or gastric injury during laparoscopic foregut surgery was obtained from six experienced laparoscopic surgeons. The specific mechanisms of injury were determined by discussion with the operating surgeon and review of the operative reports. Results: Eleven cases of esophageal or gastric perforation occurred during bougie insertion and two perforations occurred secondary to nasogastric tube placement during Nissen fundoplication or Heller myotomy. Five perforations required conversion to open operation for repair including two delayed thoracotomies. The 13 injuries occurred during the performance of 1,620 laparoscopic foregut operations for an overall incidence of 0.8%. Conclusion: Foregut injury resulting from esophagogastric intubation during laparoscopic surgery is more common than expected. Risk factors include esophageal anatomy, intrinsic pathologic changes of the esophagus, and inexperience. Prevention must focus on close communication between the surgeon and anethesiologist and safe techniques of dilator insertion.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Springer
    Surgical endoscopy and other interventional techniques 13 (1999), S. 418 -419 
    ISSN: 1432-2218
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Springer
    Surgical endoscopy and other interventional techniques 12 (1998), S. 183-185 
    ISSN: 1432-2218
    Keywords: Key words: Hemostasis — Harmonic scalpel — Bipolar electrosurgery — Vascular clips
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract. Advanced laparoscopic surgery requires a reliable method of hemostasis. In order to determine the efficacy of common hemostatic devices, we tested bipolar electrosurgery (BPES), laparosonic coagulating shears (LCS), and vascular clips (VC) on arteries of various sizes to compare the strength of hemostasis against elevated intraarterial pressure. The procedures were performed on a porcine model through a laparotomy. Segments of visceral arteries were isolated and cannulated with an angiocatheter that was linked to a pressure monitor. After hemostasis with the tested instrument and division of the vessel, the intraarterial pressure was elevated by infusion of saline solution through the angiocatheter. The pressure was recorded when bleeding occurred through the cut end of the vessel or when the pressure reached 300 mm Hg. All three devices were effective in maintaining hemostasis on small (diameter, 0.25–0.5 mm) and medium-sized arteries (diameter, 2–3.5 mm) with a success rate ranging between 75% and 100% (p= n.s.). Practice and technical finesse were required with the use of the LCS and BPES before excellent results could be obtained. The LCS has an advantage over BPES because it allows the surgeon to perform hemostasis and division simultaneously, thus keeping the operating field clean and avoiding instrument adhesion to the tissue.
    Type of Medium: Electronic Resource
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