Q: Which areas of the colon are more prone to ischemia due to hypo-perfusion?
Answer: Splenic flexure and rectosigmoid junction
The blood supply of large intestine and rectum comes from the superior mesenteric artery, inferior mesenteric artery, and internal iliac arteries. Fortunately, there is an extensive collateral circulation to protect the bowel from compromised perfusion, except in the "watershed" areas i.e., splenic flexure and rectosigmoid junction.
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