目前虽对急性缺血性脑梗死的出血性转化的患病率和发生机制有所了解 ,但有关出血对预后的影响仍不清楚。尽管病理及放射学研究提示 ,出血转化是脑梗死发展过程中的自然结果 ,但临床上往往视为并发症。然而 ,近年的观察表明 ,其预后可因出血性转化的类型而异。作者用欧洲急性卒 Although the prevalence and mechanism of hemorrhagic transformation of acute ischemic stroke are known, the impact of bleeding on the prognosis remains unclear. Although pathological and radiographic studies suggest that hemorrhagic transformation is a natural consequence of the development of cerebral infarction, it is often clinically seen as a complication. However, recent observations indicate that the prognosis may vary depending on the type of hemorrhagic transformation. The author used European acute stroke