Operative stress and anesthetics may alter immune function of surgical patients.Anesthetics may affect directly on immunocompetent cells and cause some alterations of cellular and humoral immunity.

• 手术创伤应激和麻醉剂都可引起患者免疫功能的改变,麻醉剂可以直接作用于免疫活性细胞而引起机体细胞和体液免疫的改变。