Vascular Surgery · NEET PG Preparation Surgery
A 55-year-old male undergoes open surgical repair of a large infrarenal abdominal aortic aneurysm. Six hours postoperatively, he develops severe, unr…
Practice question from Vascular Surgery (NEET PG Preparation Surgery), with the correct answer and a step-by-step solution.
hard · MCQ · Q-09958E
A 55-year-old male undergoes open surgical repair of a large infrarenal abdominal aortic aneurysm. Six hours postoperatively, he develops severe, unremitting abdominal pain out of proportion to physical findings, accompanied by bloody diarrhea and metabolic acidosis. Which of the following vessels is most likely compromised during the procedure?
- A.Celiac trunk
- B.Superior mesenteric artery
- C.Inferior mesenteric arteryCorrect answer
- D.Internal iliac artery
Solution
Ischemic colitis is a well-known and dreaded complication following AAA repair, caused by inadequate collateral blood supply to the left colon when the inferior mesenteric artery (IMA) is ligated and the internal iliac arteries have compromised flow. Symptoms include abdominal pain, bloody diarrhea, and acidosis.
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