The effect on parts of brain should be considered when choosing narcotics and hypotensors. Perioperative brian protection could reduce the postoperative incidence rates of arterial spasm and cerebral infarction.

• 麻醉药物及控制性降压药物选择原则要考虑对脑局部的影响,围手术期进行脑保护可以降低术后动脉痉挛和脑梗死发生率。