Most commonly superior<unk>  artery (SMA), thus typically involves small bowel (especially jejunum) and right colon
Left colon uncommonly involved due to collateral flow
Mean age = 70 years old (>70% of cases occur in women)
4 distinct entities:<unk>  colitis
Acute<unk><unk>  venous thrombosis
Chronic<unk>  ("intestinal angina")
Dysrhythmia (A. Fib)
Cardiomyopathy
Valve Disease
Endocarditis
MI
Atherosclerotic Disease
Prior thrombosis history
Hypercoagulable state (pregnancy, cancer, clotting disorder)
Hypovolemic state
Heart failure
Myocardial infarction with decrease output
Sepsis
Diuretic use
Mesenteric ischemia
Infectious colitis
Intestinal ischemia
Ischemic colitis
Large bowel obstruction
Ulcerative colitis
Malignant bowel obstruction
CMV colitis