Mesenteric ischemia causes
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Overview
Narrowing of the arteries that supply blood to the intestine causes mesenteric ischemia. The arteries that supply blood to the intestines run directly from the aorta. Mesenteric ischemia is often seen in people who have hardening of the arteries in other parts of the body (for example, those with coronary artery disease or peripheral vascular disease). The condition is more common in smokers and in patients with high blood pressure or blood cholesterol.
Mesenteric ischemia may also be caused by an embolus that suddenly blocks one of the mesenteric arteries. The emboli usually come from the heart or aorta. These clots are more commonly seen in patients witharrhythmias, such as atrial fibrillation.
Causes
2005 ACC/AHA Practice Guidelines for the Management of Patients With Peripheral Arterial Disease (Lower Extremity, Renal, Mesenteric, and Abdominal Aortic)-Recommendations: Etiology of Acute Nonocclusive Intestinal Ischemia (DO NOT EDIT)[1]
| Class I |
| "1. Nonocclusive intestinal ischemia should be suspected
in patients with low flow states or shock, especially cardiogenic shock, who develop abdominal pain. (Level of Evidence: B) 2. Nonocclusive intestinal ischemia should be suspected in patients receiving vasoconstrictor substances and medications (e.g., cocaine, ergots, vasopressin, or norepinephrine) who develop abdominal pain. (Level of Evidence: B) 3. Nonocclusive intestinal ischemia should be suspected in patients who develop abdominal pain after coarctation repair or after surgical revascularization for intestinal ischemia caused by arterial obstruction. (Level of Evidence: B) References
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