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Perioperative lavage promotes intraperitoneal adhesion in the rat
M van Westreenen1, P M van den Tol, A Pronk
1Department of Surgery, Diakonessen Hospital Utrecht, Rotterdam, The Netherlands.
Summary
Peritoneal lavage solutions, commonly used in surgery, unexpectedly increased postsurgical adhesion formation in a rat model. This finding suggests that even standard solutions can enhance peritoneal activation, promoting adhesion development.
Area of Science:
- Surgical research
- Experimental pathology
Background:
- Postsurgical adhesions are a significant complication.
- Peritoneal lavage is a common surgical procedure.
- The effect of lavage solutions on adhesion formation requires further investigation.
Purpose of the Study:
- To evaluate the impact of various peritoneal lavage solutions on postsurgical adhesion formation.
- To establish a reproducible rat model for studying adhesion development.
- To compare the efficacy of different solutions in preventing or promoting adhesions.
Main Methods:
- A laparotomy and standardized ischemic peritoneal injury model was used in 33 female Wistar rats.
- Evaluated solutions included RPMI medium, NaCl (0.9%), Viaspan(R), povidone-iodine (1%), and chlorhexidine (0.02%).
- Adhesion formation was semiquantitatively scored and compared to a control group without lavage.
Main Results:
- The control group (no lavage) showed a mean adhesion score of 22.5%.
- All tested peritoneal lavage solutions significantly increased adhesion formation (40.6-70.8%, p = 0.0001).
- Different solutions exhibited varying effects on adhesion development.
Conclusions:
- Peritoneal lavage solutions, contrary to expectations, significantly promote postsurgical adhesion formation in this rat model.
- These in vivo findings align with previous in vitro studies indicating lavage solutions enhance peritoneal activation.
- Further research is needed to identify safer lavage solutions or strategies to mitigate adhesion formation.