动脉瘤性蛛网膜下腔出血(subarachnoidhemorrhage,SAH)约占急性脑血管病的8％。据美国统计,每年大约有26,000人患此病。未经治疗的 SAH 死亡率最高可达50％,大多数病人死于出血后2周内。存活者的神经系统后遗症也并非少见。在出血后的头几天,可出现急性脑积水或抽搐。由于抗利尿激素释放异常继而引起水电解质平衡紊乱,也可出现抽搐 Aneurysmal subarachnoid hemorrhage (SAH) accounts for about 8% of acute cerebrovascular disease. According to U.S. statistics, about 26,000 people suffer from the disease each year. Untreated SAH mortality up to 50%, most patients died within 2 weeks after bleeding. Survivors of the nervous system sequelae are not uncommon. In the first few days after bleeding, there may be acute hydrocephalus or convulsions. Due to abnormal release of antidiuretic hormone and then cause water and electrolyte balance disorders, convulsions may also occur