Non-occlusive mesenteric vascular ischemia

Non-obliterative vascular ischemia of mesentery is an acute intestinal ischemia caused by superior mesenteric artery spasm, which accounts for 20-30% of acute mesenteric ischemia and a mortality rate of more than 70%. High mortality is associated with atypical manifestations of the disease itself, difficulty in diagnosing it, and comorbidity with other systemic serious diseases. The earliest definition of non-occlusive mesenteric vascular ischemia is necrosis of the small intestine found in autopsies, but no obvious occlusive changes in the arteries or veins. Mesenteric blood circulation studies have shown that mesenteric vasoconstriction, tissue hypoxia, and ischemia-reperfusion injury can all cause non-occlusive mesenteric ischemia.

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