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脑梗死主要是由于供应脑部血液的动脉出现粥样硬化和血栓形成，使管腔狭窄甚至闭塞，导致局灶性急性脑供血不足而发病；也有因异常物体沿血液循环进入脑动脉或供应脑血液循环的颈部动脉，造成血流阻断或血流量骤减而产生脑组织坏死者。前者称为动脉硬化性脑梗死，占本病的40％～60％，后者称为脑栓塞，占本病的15％～20％。脑梗死是脑血管病中最常见者，病死率平均10％～15%，致残率极高，且极易复发，复发性中风的死亡率大幅度增加。“,”The chief reason of cerebral infarction, is brain blood supply artery atherosclerosis and thrombosis, lumen become narrow, even lead to occlusion. Also has the abnormal objects into the brain or cervical artery, caused blocked blood flow or blood flow drop, produce bad dead brain tissue. The former called atherosclerosis cerebral infarction,accounted for 40% ~60% of the disease. The latter is called the cerebral embolism, accounted for 15%~ 20% of the disease. Cerebral infarction is the most common cerebrovascular disease, on average, 10%~ 15% fatality rate, high morbidity, and easy to relapse, recurrent stroke mortality will increase dramatically.