Objective To study the prevention effects and the physicochemical mechanisms of action of Tongqiaohuoxue Decoction on delayed cerebral vasospasm(DCV) after subarachnoid hemorrhage (SAH).

• 目的实验研究通窍活血汤对蛛网膜下腔出血(SAH)后迟发性脑血管痉挛(DCV)的预防作用,分析其作用机理。