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目的：根据法乐四联症所导致的特殊的血流动力学改变及全身异常的生理变化，探讨更适当的麻醉方法。方法：回顾性总结１９９１年以来３００例婴幼儿法乐四联症患儿的血流动力学、血气、并发症及死亡率。结果：血流动力学及血气分析结果均较稳定。死亡１１例（占３．７％），其中严重低输出量综合征４例，肺部并发症５例，ＩＩ度房室传导阻滞１例，肾功能衰竭１例。结论：针对术前缺氧、易脱水、酸血症等改变，作相应处理，密切监测血氧饱和度，防治转流前缺氧发作及低血压，是保证麻醉平稳的关键。
OBJECTIVE: To explore a more appropriate method of anesthesia based on the specific hemodynamic changes caused by tetralogy of Fallot and the physiological changes of systemic abnormalities. Methods: The hemodynamics, blood gas, complications and mortality of 300 infants with Tetralogy of Fallot from 1991 to 2004 were retrospectively reviewed. Results: Hemodynamics and blood gas analysis results were more stable. There were 11 deaths (3.7%), including 4 cases of severe low-output syndrome, 5 cases of pulmonary complications, 1 case of II degree atrioventricular block and 1 case of renal failure. CONCLUSIONS: In order to prevent preoperative hypoxia, dehydration, acidosis and other changes, the corresponding treatment, close monitoring of oxygen saturation, prevention and treatment of hypoxemia before commutation is the key to ensure stable anesthesia.