蛛网膜下腔出血(subarachnoid hemorrhage,SAH)是由于多种原因造成血液进入颅内或椎管内蛛网膜下腔所引起的综合征。SAH后有40%~80%的病人发生迟发性脑血管痉挛,导致脑供血不足,严 Subarachnoid hemorrhage (SAH) is a syndrome caused by blood entering the intracranial or subarachnoid space for a variety of reasons. After SAH 40% to 80% of patients with delayed cerebral vasospasm, resulting in insufficient blood supply to the brain, strict