先天性复杂心脏病（简称先心病）并发脑脓肿，行手术麻醉危险性大，本文介绍３例法乐氏四联症及法乐氏五联症患儿行颅脑手术麻醉的体会。１　病例资料　例１：男，年龄５岁，体重１３ｋｇ，因持续高热（３８．６～３９．５℃）５０余天，以左顶枕叶脑脓肿收入院。患儿严重紫绀 Congenital complex heart disease (referred to as congenital heart disease) complicated by brain abscess, the risk of surgical anesthesia, this article describes 3 cases of tetralogy of Fallot and Farrell five children undergoing craniotomy anesthesia experience. 1 case data Example 1: male, age 5 years old, weight 13kg, due to sustained high fever (38.6 ~ 39.5 ℃) for more than 50 days to the left top of the occipital brain abscess admission hospital. Children with severe cyanosis