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Ischaemic colitis following aortoiliac surgery.
H Van Damme1, E Creemers, R Limet
1Department of Cardiovascular Surgery, CHU Liège, Belgium.
Acta Chirurgica Belgica
|April 25, 2000
Summary
Ischaemic colitis after aortoiliac surgery is serious, especially after ruptured abdominal aortic aneurysm (AAA) repair. Early detection via sigmoidoscopy and preserving colon blood supply can reduce mortality.
Area of Science:
- Vascular Surgery
- Gastroenterology
- Colorectal Surgery
Background:
- Ischaemic colitis is a significant complication following aortoiliac surgery.
- Incidence varies: 7% after ruptured AAA repair, 0.6% after aortoiliac occlusive disease (AOD) bypass.
- Predisposing factors and outcomes require further analysis.
Purpose of the Study:
- To analyze predisposing factors and outcomes of ischaemic colitis post-aortoiliac surgery.
- To evaluate the impact of surgical techniques on colonic ischaemia.
- To identify strategies for reducing mortality associated with this complication.
Main Methods:
- Retrospective review of 28 cases of clinically evident colonic ischaemia from 1988 to 1998.
- Analysis of patient data including surgical repair type, predisposing factors, and ischaemia grade.
- Evaluation of treatment outcomes, including colectomy and mortality rates.
Main Results:
- Overall mortality for ischaemic colitis was 57% (16/28 patients).
- Grade 3 ischaemia (transmural necrosis) had a 66% mortality after colectomy; all non-operated grade 3 patients died.
- Profound hypovolaemic shock and inflammatory AAA were identified as significant predisposing factors. Mild ischaemia (grades 1-2) had no mortality.
- Colon revascularization and reimplantation of mesenteric or iliac arteries did not consistently prevent necrosis or influence outcomes.
Conclusions:
- A higher incidence of ischaemic colitis occurs after ruptured AAA repair compared to elective AAA repair or AOD bypass.
- Early detection using postoperative sigmoidoscopy may reduce mortality.
- Enhanced efforts to restore or preserve colonic vascularization are crucial for lowering the incidence and improving outcomes of ischaemic colitis following aortoiliac surgery.