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Related Experiment Videos

Parietal cell vagotomy: its effect on lower exophageal sphincter function

J W Braasch, L E Sala, F H Ellis

    Archives of Surgery (Chicago, Ill. : 1960)
    |June 1, 1980
    PubMed
    Summary

    Parietal cell vagotomy did not alter lower esophageal sphincter (LES) function in duodenal ulcer patients, suggesting LES has intrinsic tone independent of external nerve supply.

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    Area of Science:

    • Gastroenterology
    • Surgical Physiology

    Background:

    • Duodenal ulcers are often treated with surgery.
    • Parietal cell vagotomy aims to reduce acid secretion.
    • Potential side effects include gastroesophageal reflux due to altered lower esophageal sphincter (LES) function.

    Purpose of the Study:

    • To investigate the effect of parietal cell vagotomy on LES function.
    • To determine if LES pressure, length, or adaptive response changes post-surgery.
    • To assess the impact on reflux symptoms.

    Main Methods:

    • Studied 11 patients with duodenal ulcers before and after parietal cell vagotomy.
    • Measured LES pressure amplitude, LES length, and LES adaptive response.
    • Monitored for postoperative gastroesophageal reflux symptoms.

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    Main Results:

    • No significant changes were observed in LES pressure (12.7 vs 13.7 mm Hg).
    • LES length remained stable (3.85 vs 3.73 cm).
    • LES adaptive response showed no significant alteration (1.26 vs 1.31).
    • None of the patients reported postoperative reflux symptoms.

    Conclusions:

    • Parietal cell vagotomy does not appear to negatively impact LES function in the short term.
    • The findings support the hypothesis that the LES possesses intrinsic myogenic tone.
    • LES function may be independent of extrinsic nerve supply affected by this surgical procedure.