氯胺酮镇痛效能强,作用迅速,苏醒快,对呼吸、循环抑制轻微,临床广泛应用于婴幼儿唇裂整复术。但实践中发现,单纯应用氯胺酮麻醉,作用时间短,用量大,副作用多,术中不易保持麻醉稳定。为扬长避短,本组采用氯胺酮与硫喷妥钠复合应用, Ketamine analgesic efficacy, rapid action, rapid recovery, respiratory and circulatory depression is mild, clinical widely used in infant cleft lip surgery. However, practice found that simple use of ketamine anesthesia, the role of a short time, a large amount of side effects and more difficult to maintain intraoperative anesthesia stability. In order to avoid weaknesses, this group of ketamine and thiopental combined application,