脑血管痉挛(cerebra lvasospasm,CV S)是蛛网膜下腔出血(subarachnoid hem orrhage,SAH)最严重的并发症之一,其发生率高达30%~90%,常引起严重局部脑组织缺血或迟发性缺血性脑损害,甚至导致脑梗死,成为致死和致残的主要原因。近年来随着研究的不断深入,已经认识到氧合血红蛋白、 Cerebral vasospasm (CVS) is one of the most serious complications of subarachnoid hemorrhage (SAH), and its incidence is as high as 30% -90%. It often causes severe local brain ischemia or Delayed ischemic brain damage, and even lead to cerebral infarction, become the leading cause of death and disability. In recent years, with the continuous deepening of research, it has been recognized that oxygenated hemoglobin,