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Respiratory function following major emergency abdominal surgery.

Jakob Burcharth1, Jakob Ohm Oreskov1, Andreas Falkenberg1

  • 1Department of Surgery, Center for Surgical Science (CSS), Zealand University Hospital & University of Copenhagen, Denmark.

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Postoperative respiratory function, measured by spirometry and peak flow, was significantly reduced during the first week after major emergency abdominal surgery. Recovery was observed, but function remained impaired irrespective of pain scores.

Keywords:
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Area of Science:

  • Medical Science
  • Surgical Research
  • Pulmonary Medicine

Background:

  • Major emergency abdominal surgery poses risks to postoperative respiratory function.
  • Early assessment of pulmonary function is crucial for patient recovery and management.

Purpose of the Study:

  • To evaluate the timewise postoperative respiratory function after major emergency abdominal surgery.
  • To assess changes in spirometry and peak flow from postoperative day 1 to day 7.

Main Methods:

  • Daily spirometry (Forced Expiratory Volume - FEV) and peak flow (PEF) measurements were taken from postoperative day 1 to 7.
  • FEV1, FEV6, FEV1/FEV6 ratio, and PEF were analyzed using linear regression.
  • 35 consecutive patients undergoing major emergency abdominal surgery were included.

Main Results:

  • Forced Expiratory Volume at 1 second (FEV1) increased from 51% to 67% of predicted values (p=0.005).
  • Forced Expiratory Volume 6 (FEV6) increased from 55% to 70% of predicted values (p=0.008).
  • Respiratory function was not significantly correlated with pain scores.

Conclusions:

  • Respiratory function remains significantly reduced throughout the first postoperative week following major emergency abdominal surgery.
  • The observed impairment in respiratory function is independent of pain scores during this period.