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Related Experiment Videos

Open peritoneal management in murine peritonitis.

M A Terhar1, M M Dunn

  • 1Department of Surgery, Wright State University School of Medicine, Dayton, Ohio 45429.

The American Surgeon
|July 1, 1990
PubMed
Summary

This study developed an animal model for open peritoneal management in severe peritonitis. Mesh inserts in rats significantly reduced mortality compared to standard closure, suggesting a promising therapeutic approach.

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Area of Science:

  • Surgical Innovation
  • Peritonitis Research
  • Animal Modeling

Background:

  • Open management of the peritoneal cavity with mesh inserts shows promise in clinical settings for severe peritonitis.
  • Existing animal models were insufficient for studying this technique due to lack of specific clinical findings.

Purpose of the Study:

  • To develop and validate a rat model of severe peritonitis suitable for investigating open peritoneal management with mesh inserts.
  • To compare the efficacy of mesh insertion versus standard closure in reducing mortality in this peritonitis model.

Main Methods:

  • Severe peritonitis was induced in rats via cecal ligation and puncture, with added distal ileal ligation to mimic clinical conditions.
  • Two groups were established: Group I (standard fascial closure) and Group II (mesh insert with polyethylene film).
  • Mortality rates were monitored over 96 hours post-reoperation, with no antibiotic treatment administered.

Main Results:

  • The modified peritonitis model demonstrated high mortality rates in both groups.
  • Group II (mesh insert) exhibited significantly lower cumulative mortalities (48-70%) compared to Group I (standard closure, 77-90%) over 96 hours.
  • Sham laparotomy resulted in 100% survival, validating the peritonitis induction method.

Conclusions:

  • The developed rat model effectively replicates severe peritonitis and is suitable for evaluating surgical interventions.
  • Open management with mesh inserts significantly reduces mortality in this severe peritonitis model compared to standard abdominal closure.
  • This model provides a basis for further research into mesh-based therapies for peritonitis.

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