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Diaphragm function after upper abdominal surgery in humans.

G T Ford, W A Whitelaw, T W Rosenal

    The American Review of Respiratory Disease
    |April 1, 1983
    PubMed
    Summary
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    Upper abdominal surgery impairs diaphragm function, leading to reduced lung capacity and atelectasis. Recovery of diaphragm activity and lung function was observed within 24 hours post-surgery.

    Area of Science:

    • Respiratory Physiology
    • Surgical Outcomes

    Background:

    • Upper abdominal surgery commonly causes pulmonary complications.
    • Atelectasis in lower lung lobes is a frequent postoperative issue.

    Purpose of the Study:

    • To assess lung function changes after cholecystectomy.
    • To specifically evaluate diaphragm function post-surgery.

    Main Methods:

    • Studied 15 patients undergoing cholecystectomy.
    • Measured pulmonary function tests (forced expiratory volume, vital capacity).
    • Assessed diaphragm function using transdiaphragmatic pressure, gastric/esophageal pressure, and rib cage/abdominal diameter changes.

    Main Results:

    • Postoperatively, vital capacity and forced expiratory volume decreased.

    Related Experiment Videos

  • Diaphragm activity significantly reduced, shifting breathing pattern to the rib cage.
  • Atelectasis observed in 90% of patients; hypoxemia present in 100%.

    • Conclusions:

    • Reduced diaphragm function post-surgery contributes to atelectasis and decreased lung capacity.
    • Diaphragm function and lung mechanics showed improvement within 24 hours.