Objective: To observe the effects with Nimodipine on acute and chronic cerebral vasospasm(CVS) for clinical effective application of Nimodipine.

• 目的：通过观察尼莫地平对蛛网膜下腔出血后急性和慢性脑血管痉挛的不同作用，为临床合理使用尼莫地平提供依据。