非阻塞性肠系膜缺血（non-occlusive mesenteric ischemia，NOMI）发病率低。与其他类型的血运正常的肠梗阻不同的是，NOMI常发生于50岁以上人群，伴有心脏、肾脏和肝脏等疾病。腹痛是NOMI的首发症状，CT、MRI和超声能够评价主动脉和腹腔动脉起始部的病变，但选择性肠系膜上动脉造影仍然是诊断NOMI的金标准。与肠系膜动脉阻塞性疾病不同，早期NOMI可以保守治疗。

Non-occlusive mesenteric ischemia: diagnosis and management        ZHANG Jian. Department of Vascular Surgery, First Affiliated Hospital of China Medical University, Shenyang 110001, China
Abstract    Non-occlusive mesenteric ischemia (NOMI) is a rarely occurred disease and compromises all forms of mesenteric ischemia with patent mesenteric arteries. It generally affects patients over 50 years of age suffering from myocardial infarction, congestive heart failure, aortic insufficiency, renal or hepatic disease and patients following cardiac surgery. Acute abdominal pain may be the only early presenting symptom of mesenteric ischemia. Non-invasive imaging modalities, such as CT, MRI, and ultrasound, are able to evaluate the aorta and the origins of splanchnic arteries. Despite the technical evolution of those methods, selective angiography of mesenteric arteries is still the gold standard in diagnosing peripheral splanchnic vessel disease. In early NOMI, as opposed to occlusive disease, there is no surgical therapy.