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Intestinal decontamination using povidone-iodine compromises small bowel storage quality
David W Olson1, Shin Kadota, Anthony Cornish
1Surgical-Medical Research Institute, University of Alberta, Edmonton, Canada.
Transplantation
|June 7, 2003
Summary
Povidone-iodine (PI) pretreatment harms small bowel storage quality by increasing injury and permeability. This method offers no additional benefit for intestinal decontamination during organ preservation.
Area of Science:
- Transplantation research
- Organ preservation techniques
- Surgical decontamination
Background:
- Povidone-iodine (PI) is utilized for duodenal decontamination in pancreas transplantation.
- Current use aims to prevent intestinal complications.
Purpose of the Study:
- To evaluate the impact of luminal PI pretreatment combined with amino acid (AA)-rich solutions on small bowel (SB) storage.
- To determine if PI enhances decontamination efficacy or affects SB preservation quality.
Main Methods:
- Rat small bowels were preserved using University of Wisconsin solution.
- Luminal administration involved combinations of AA solution with or without PI pretreatment.
- Groups received varying volumes of AA and PI solutions.
- Analysis included cellular energetics, permeability, and histology over 10-hour cold storage.
Main Results:
- PI treatment significantly reduced adenosine triphosphate (ATP) levels.
- Mannitol permeability increased in PI-treated groups, indicating greater injury.
- Histologic injury scores were higher in PI-treated small bowels.
- Both PI and AA solutions effectively cleared over 95% of enteric bacteria.
Conclusions:
- Short-term luminal exposure to PI exacerbates small bowel injury during preservation.
- PI pretreatment provides no added benefit for intestinal decontamination beyond standard solutions.
- The findings suggest PI is detrimental to small bowel graft quality.