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Morphologic alterations associated with mechanical bowel preparation before elective colorectal surgery: a randomized
Pascal Bucher1, Pascal Gervaz, Jean-François Egger
1Department of Surgery, Clinic of Visceral and Transplantation Surgery, Geneva, Switzerland. Pascal.Bucher@hcuge.ch
Diseases of the Colon and Rectum
|November 8, 2005
Summary
Mechanical bowel preparation causes significant colon wall alterations, including mucus loss and increased inflammation. These changes may contribute to surgical complications like anastomotic leakage.
Area of Science:
- Colorectal Surgery
- Gastroenterology
- Surgical Pathology
Background:
- Mechanical bowel preparation (MBP) is standard for colorectal surgery.
- MBP has been linked to increased septic complications, including anastomotic leakage.
- The impact of MBP on colonic tissue histology remains unclear.
Purpose of the Study:
- To investigate the association between MBP and histologic alterations in the colon.
- To compare colonic tissue morphology in patients undergoing elective colorectal surgery with or without MBP.
Main Methods:
- Prospective randomized trial of 50 patients undergoing elective colorectal surgery.
- Patients were randomized to receive MBP (polyethylene glycol) or no preparation.
- Colonic tissue samples were assessed by a pathologist blinded to group allocation.
Main Results:
- MBP was associated with significantly more frequent bowel wall alterations.
- Loss of superficial mucus and epithelial cells was more severe in the MBP group (96% vs. 52% and 88% vs. 40%, respectively).
- Increased infiltration of lymphocytes and polymorphonuclear cells was observed in the MBP group (48% vs. 12% and 52% vs. 8%, respectively).
Conclusions:
- Mechanical bowel preparation induces structural changes and inflammation in the colonic wall.
- These MBP-associated histologic changes may be a contributing factor to increased abdominal morbidity.
- Further research is needed to confirm the direct link between MBP-induced inflammation and anastomotic leak risk.