缺血性肠病主要发生于老年人,可由风湿性心脏病、心律失常、动脉粥样硬化和炎症等引起.比较合理的分类如下:1.动脉闭塞与非闭塞性急性肠缺血2.慢性动脉阻塞3.小肠或结肠的灶性缺血急性肠缺血急性肠缺血是指血供不足造成小肠可能坏死或完全坏死的状况.临床症状:突然发生严重绞痛,随之排粘液血便,数小时内出现周围循环衰竭,迅速转为满腹钝痛,出现梗阻与腹膜炎,如不处理则1至2天内死亡.早期症状可不典型,梗塞严重而绞 Ischemic bowel disease occurs mainly in the elderly, can be caused by rheumatic heart disease, arrhythmia, atherosclerosis and inflammation, etc. The more reasonable classification is as follows: 1. Artery occlusion and non-occlusive acute intestinal ischemia 2. Chronic Artery occlusion 3. Focal ischemia in the small intestine or colon Acute intestinal ischemia Acute intestinal ischemia is the condition in which the small intestine may be necrotic or completely necrotic due to inadequate blood supply Clinical symptoms: Severe colic, followed by mucus bloody stools, Within a few hours appear around the circulatory failure, quickly became full dull pain, obstruction and peritonitis, such as not treated within 1 to 2 days of death. Early symptoms may be atypical, serious infarction and twist