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Related Experiment Videos

Persistent post-laparoscopy pneumoperitoneum.

D L Feingold1, W D Widmann, S K Calhoun

  • 1Department of Surgery, College of Physicians and Surgeons, Columbia University, 177 Fort Washington Avenue, New York, NY 10032, USA.

Surgical Endoscopy
|October 18, 2002
PubMed
Summary
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Postoperative pneumoperitoneum after laparoscopic surgery typically resolves within two days. Persistent free intraperitoneal gas detected by CT scan beyond this point may indicate a gastrointestinal perforation.

Area of Science:

  • Veterinary Radiology
  • Surgical Imaging
  • Abdominal Imaging

Background:

  • Persistent pneumoperitoneum post-laparoscopy can indicate residual gas or gastrointestinal perforation.
  • Computed tomography (CT) is used to assess pneumoperitoneum.
  • Animal studies help characterize imaging findings.

Purpose of the Study:

  • To characterize the extent and duration of postoperative pneumoperitoneum using CT in a porcine model.
  • To differentiate between residual gas and potential complications.

Main Methods:

  • Five pigs underwent cholecystectomy (4 laparoscopic, 1 open).
  • Serial upright chest radiographs and abdominal CT scans were performed daily postoperatively.
  • Radiologists blinded to the procedure reviewed imaging for pneumoperitoneum resolution.

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Main Results:

  • Pneumoperitoneum resolved on radiographs by postoperative day 1 in all pigs.
  • CT showed resolution or minimal persistence by postoperative day 2 in the laparoscopic group.
  • The open surgery group showed persistent pneumoperitoneum on CT through postoperative day 6.

Conclusions:

  • Free intraperitoneal gas detected by CT typically resolves within 2 days after laparoscopic surgery in pigs.
  • Persistent pneumoperitoneum beyond 2 days may suggest a perforated viscus.
  • Findings in pigs may be applicable to human patients.