患者,男,57岁,于2005年1月31日15时突然剧烈头痛、恶心伴有呕吐,即呼救护车送我院,途中病人意识不清,伴尿失禁。急诊CT检查示:脑池及部分脑沟裂高密度影呈铸型,以鞍上池为著,脑沟变浅,侧脑室略大,中线居中。考虑蛛网膜下腔出血。急诊入院。既往无高血压及遗传病史。查体:血压18 Patient, male, 57 years old, sudden severe headache at 15:00 on January 31, 2005, with nausea and vomiting, which was called for ambulance to hospital. The patient was unconscious and had incontinence. Emergency CT examination showed: part of the brain pool and cracked high-density shadow of the genitals cast to saddle on the pool for the sulci shallow, slightly larger lateral ventricle, the median center. Consider subarachnoid hemorrhage. Emergency admission. No previous history of hypertension and genetic history. Physical examination: blood pressure 18