Physiological outcome following laparoscopic highly selective vagotomy. A controlled study in a pig model

Area of Science:

• Gastroenterology
• Surgical Innovation
• Comparative Physiology

Background:

• Open highly selective vagotomy (HSV) is an established treatment for refractory chronic duodenal ulcers.
• The clinical adoption of laparoscopic HSV has outpaced rigorous physiological evaluation.
• Prior studies have not comprehensively assessed the physiological impact of laparoscopic HSV.

Purpose of the Study:

• To evaluate the physiological validity and efficacy of laparoscopic highly selective vagotomy (HSV) compared to open HSV.
• To determine the effects of laparoscopic and open HSV on gastric acid output, gastric emptying, and gastroesophageal reflux in an animal model.
• To provide evidence-based recommendations for the clinical use of laparoscopic HSV.

Main Methods:

• A controlled animal study comparing laparoscopic HSV, open HSV, sham laparoscopic procedure, and no procedure.
• Gastric acid output measured via aspiration.
• Liquid gastric emptying assessed using George's double sampling technique.
• Gastroesophageal reflux evaluated through 8-hour ambulatory pH monitoring.

Main Results:

• Laparoscopic HSV demonstrated comparable efficacy to open HSV in reducing basal gastric acid output.
• Unlike open HSV, laparoscopic HSV did not adversely affect liquid gastric emptying.
• Neither laparoscopic nor open HSV induced significant gastroesophageal reflux in the study subjects.

Conclusions:

• Laparoscopic highly selective vagotomy (HSV) is physiologically validated as an effective alternative to open HSV.
• The findings support the continued and appropriate clinical application of laparoscopic HSV for selected patients.
• Laparoscopic HSV offers a potentially advantageous approach by preserving normal gastric emptying compared to the open technique.