自发性蛛网膜下腔出血(SAH)是常见的脑血管疾病之一,其发病率在不同国家和地区有较大差异,总体发病率大约为每年10/10万人左右,虽然仅占脑血管病的5%～10%,但其如果不能得到及时正确救治,死亡率和致残率均高于其他类型的脑血管病。自发性SAH的最主要的病因为颅内动脉瘤破裂,约占全部病例的85%左右,这些病例除发病后早期死亡者之外, Spontaneous subarachnoid hemorrhage (SAH) is one of the common cerebrovascular diseases, its incidence in different countries and regions are quite different, the overall incidence of about 10/10 million per year, although only accounts for cerebrovascular Disease 5% to 10%, but if they can not get the correct treatment in time, the mortality and morbidity are higher than other types of cerebrovascular disease. Spontaneous SAH is the most important cause of intracranial aneurysm rupture, accounting for about 85% of all cases, in addition to these cases of early death after onset,