<unk>  is often classified according to the underlying cause. Non-occlusive<unk>  develops because of low blood pressure or constriction of the vessels feeding the colon; occlusive<unk>  indicates that a blood clot or other blockage has cut off blood flow to the colon. Non-occlusive<unk>  In hemodynamically unstable patients (i.e. shock) the mesenteric perfusion may be compromised. This condition is commonly asymptomatic, and usually only apparent through a systemic inflammatory response. Occlusive<unk>  Mostly the result of a thromboembolism. Commonly the embolism is caused by atrial fibrillation, valvular disease, myocardial infarction, or cardiomyopathy. In addition,<unk>  is a well-recognized complication of abdominal aortic aneurysm repair, when the origin of the inferior mesenteric artery is covered by the aortic graft. In a 1991 review concerning 2137 patients the accidental inferior mesenteric artery ligation was the most common cause (74%) of<unk> . Thus, patients without adequate collateralization are at risk for<unk>  of the descending and sigmoid colon. Bloody diarrhea and leukocytosis in the postoperative period are essentially diagnostic of<unk> . The complication can be prevented through careful selection of subjects that may require replanting inferior mesenteric artery (IMA) and completing the pre surgical procedure information with an instrumental evaluation during surgical treatment.
Ischemic colitis
Ulcerative colitis
Diversion colitis
Chemical colitis
Collagenous colitis
Cytomegalovirus colitis
Microscopic colitis
Diverticulitis