Dura versus Gore-Tex as an abdominal wall prosthesis in an open and closed infected model
1Department of Pediatric Surgery, University of Pittsburgh School of Medicine, PA 15213-2583.
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Summary
In infected wounds, Gore-Tex (PTFE) demonstrated superior performance over dura for abdominal wall defect closure. PTFE showed better infection resistance, reduced patch separation, and fewer adhesions in contaminated settings.
Area of Science:
- Biomaterials Science
- Surgical Innovation
- Wound Healing Research
Background:
- Large abdominal wall defects often require prosthetic materials for closure, especially in contaminated or infected wounds.
- Choosing the appropriate prosthetic material is critical for successful wound healing and minimizing complications.
- Gore-Tex (PTFE) and dura are potential materials for abdominal wall reconstruction, but their comparative efficacy in infected scenarios is not well-established.
Purpose of the Study:
- To compare the effectiveness of Gore-Tex (PTFE) and dura in closing large abdominal wall defects.
- To evaluate resistance to infection, patch separation, and intraperitoneal adhesion formation for both materials.
- To determine the optimal prosthetic material for abdominal wall reconstruction in compromised wound environments.
Main Methods:
- Ninety guinea pigs underwent full-thickness abdominal defects (2 cm2) patched with either PTFE or dura.
- Wounds were managed under three conditions: open, aseptically closed, or contaminated with Staphylococcus aureus and then closed.
- Outcomes assessed included patch separation, retention, adhesion formation, and wound healing over 45 days.
Main Results:
- Patch separation, retention, and adhesions were comparable between PTFE and dura in open and aseptically closed wounds.
- In infected closed wounds, PTFE demonstrated significantly longer incision integrity, delayed patch separation, and improved overall patch retention compared to dura.
- PTFE also significantly reduced intraperitoneal bowel adhesions in the infected closed wound model.
Conclusions:
- Gore-Tex (PTFE) offers superior outcomes to dura for closing large abdominal wall defects in infected conditions.
- PTFE's enhanced resistance to infection and reduced adhesion formation make it a more suitable prosthetic material for contaminated abdominal wounds.
- These findings support the use of PTFE in complex abdominal wall reconstructions where infection risk is a concern.