Nursing points:before operation observation about pations condition and psychol ogical nursing,give the drug of the anti-cerebral vascular convulsion,to improve cerebral vascular microcirculation.

• 术前应密切观察病情变化，积极给予抗脑血管痉挛药物治疗，改善脑微循环；同时应加强心理护理和卫生宣教，有助于手术的顺利进行和术后的康复。