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Sigmoid colon exteriorization after ruptured abdominal aortic aneurysm
S Funahashi1, A Osoegawa, T Matsumata
1Department of Surgery, Section of Vascular Surgery, Saiseikai Yahata General Hospital, Kitakyushu, Fukuoka, Japan.
Ruptured abdominal aortic aneurysm (AAA) repair complicated by sigmoid colon ischemia. Exteriorizing the colon allowed delayed resection, preventing graft infection and aiding patient survival.
Area of Science:
- Vascular Surgery
- Gastrointestinal Surgery
- Surgical Critical Care
Background:
- Ruptured abdominal aortic aneurysms (AAA) are life-threatening emergencies requiring prompt surgical intervention.
- Colonic ischemia is a serious complication following AAA repair, particularly in ruptured cases.
- Simultaneous repair of AAA and colon resection increases risks, necessitating careful surgical planning.
Observation:
- A 74-year-old male presented with a ruptured AAA and underwent emergency aneurysmectomy with graft replacement.
- Intraoperative findings revealed sigmoid colon discoloration and spasm, suggestive of ischemia.
- The sigmoid colon was exteriorized to monitor for ischemia, avoiding immediate resection.
Findings:
- Postoperatively, the exteriorized colon showed worsening patchy ischemia, necessitating a sigmoid colectomy and end colostomy on the 4th day.
- The patient developed multisystem organ failure but eventually recovered.
- Exteriorization facilitated timely diagnosis of colonic ischemia and allowed a delayed, lower-risk second-look operation.
Implications:
- Colon exteriorization is a valuable strategy in managing suspected colonic ischemia during ruptured AAA repair.
- This approach minimizes infection risk to the prosthetic graft and allows for staged management of bowel compromise.
- Careful intraoperative assessment and staged surgical procedures are crucial for improving outcomes in complex AAA cases.
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