缺血性结肠炎是结肠的某一段由于供血不足而引起的疾病,按缺血的程度分为3型:(1)一过型缺血程度轻、短暂,仅引起黏膜和黏膜下层的病理改变如充血、水肿、糜烂、出血、淤斑等,重者有纵行溃疡,但均可逆,能完全恢复正常。(2)狭窄型缺血程度较重或短暂反复发作,肠壁多次破坏、修复, Ischemic colitis is a segment of the colon due to insufficient blood supply caused by the disease, according to the degree of ischemia is divided into 3 types: (1) a transient ischemic light, transient, only cause mucosal and submucosal pathological changes Such as congestion, edema, erosion, bleeding, ecchymosis, severe cases of longitudinal ulcers, but are reversible, can be completely restored to normal. (2) severe ischemic or severe recurrent episodes of repeated damage to the intestinal wall, repair,