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患儿男,2岁,全身情况良好,在静脉麻醉下行疝修补术。术前肌注苯巴比妥钠25mg、阿托品0.1mg。先肌注氯胺酮50mg,5min后安静入睡,并接上脉搏血氧仪进行连续监测,同时静滴r-羟基丁酸钠500mg(r-OH)。15min后静滴哌替啶20mg、异丙嗪20mg、5min后呼吸减慢,1min后SpO_2。从98％迅速降至60％,患儿口唇发绀,自主呼吸停止,立即气管插管人工呼吸。5min后SpO_2恢复到98％,心率160bpm,手术照常进行,1h后恢复自主呼吸,术毕拔管后观察无缺氧现象,送回病
Children, male, 2 years old, the general condition is good, hernia repair under intravenous anesthesia. Preoperative intramuscular injection of sodium phenobarbital 25mg, atropine 0.1mg. First, intramuscular injection of ketamine 50mg, 5min after sleep quietly, and connected to the pulse oximeter for continuous monitoring, while intravenous infusion of sodium r-hydroxybutyrate 500mg (r-OH). After 15min intravenous infusion of pethidine 20mg, promethazine 20mg, 5min after respiration slowed, SpO_2 after 1min. From 98% quickly dropped to 60%, children with cyanotic lips, spontaneous breathing stopped, immediate endotracheal intubation artificial respiration. After 5min SpO_2 recovered to 98%, heart rate 160bpm, surgery as usual, 1h after resumption of spontaneous breathing, surgery after extubation was observed no hypoxia, returned to the sick