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Related Concept Videos

Peptic Ulcer Disease V: Surgical Management and Nursing Care01:25

Peptic Ulcer Disease V: Surgical Management and Nursing Care

Surgical management and nursing care are crucial in treating Peptic Ulcer Disease (PUD). Here is an organized and enhanced overview of the surgical interventions and the associated nursing care for PUD:
Surgical Interventions for Peptic Ulcer Disease

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Related Experiment Video

Updated: Jul 2, 2026

Roux-en-Y Gastric Bypass Operation in Rats
07:37

Roux-en-Y Gastric Bypass Operation in Rats

Published on: June 11, 2012

Vagal nerve dissection during pouch formation in laparoscopic Roux-Y-gastric bypass for technical simplification:

A Perathoner1, H Weiss, W Santner

  • 1Department of Visceral, Transplant and Thoracic Surgery, Medical University Innsbruck, Anichstrasse 35, 6020, Innsbruck, Austria.

Obesity Surgery
|August 16, 2008
PubMed
Summary

Dissecting the vagal nerve during Roux-Y gastric bypass (RY-BP) simplifies pouch creation. This technique, while not impacting weight loss or satiety, showed no adverse clinical or functional outcomes in patients.

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Techniques of Sleeve Gastrectomy and Modified Roux-en-Y Gastric Bypass in Mice
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Last Updated: Jul 2, 2026

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Area of Science:

  • Bariatric Surgery
  • Surgical Technique
  • Gastrointestinal Surgery

Background:

  • Pouch formation is a critical step in Roux-Y gastric bypass (RY-BP).
  • Preserving the vagal nerve is common, but its benefits are not well-established.
  • Dissecting perigastric tissue, including the anterior vagal trunk, may ease pouch creation.

Purpose of the Study:

  • To evaluate the clinical outcomes of RY-BP with and without vagal nerve dissection.
  • To assess the impact of vagal nerve dissection on weight loss, complications, and gastrointestinal symptoms.

Main Methods:

  • 40 morbidly obese patients underwent RY-BP, divided into vagal nerve preservation (n=25) and dissection (n=22) groups.
  • Clinical parameters, endoscopy, manometry, pH-metry, satiety scores, ghrelin, and gastrin levels were assessed.
  • Median follow-up was 36.1 months.

Main Results:

  • No mortality; one patient in each group required re-operation.
  • Significant weight loss observed in all patients (p < 0.01).
  • No significant differences in weight loss, satiety, gastrin, or ghrelin between groups; two patients in the dissection group had acid reflux.

Conclusions:

  • Dissecting perigastric tissue, including the anterior vagal trunk, can simplify RY-BP pouch formation.
  • Vagal nerve dissection did not negatively influence clinical, functional, or laboratory outcomes.
  • The procedure is technically feasible and safe, with no significant impact on long-term results.