目的总结２７例婴幼儿在深低温停循环（ＤＨＣＡ）下心内直视手术的麻醉与管理。方法选用单一大剂量芬太尼静脉麻醉辅以异氟醚吸入的方法及特殊的体外循环（ＣＰＢ）降温、升温方法。结果麻醉方法平稳，ＣＰＢ运转良好，ＤＨＣＡ均在安全时限内，无中枢神经系统后遗症发生。结论提示此麻醉的关键在于稳定循环、有效的心肌保护及脑保护、平稳彻底的升降温过程 Objective To summarize the anesthesia and management of 27 infants under open heart surgery under deep hypothermic circulatory arrest (DHCA). Methods A single high-dose fentanyl intravenous anesthesia supplemented with isoflurane inhalation method and special CPB cooling, warming method. Results Anesthesia was stable and CPB was working well. DHCA was within the safe time limit, and no central nervous system sequelae occurred. The conclusions suggest that the key of this anesthesia is stable circulation, effective myocardial protection and brain protection, smooth and thorough cooling process