我们观察了23例患儿氯胺酮诱导下气管内插管期间SpO2的变化，发现患儿SpO2在短时间内明显下降。为了防止低氧血症的发生，建议在氛胺酮诱导下加用司可林，并紧闭面罩供氧3～5分钟，可以避免插管过程中SpO2降至危险水平，延长插管安全时限。1临床资料1．1一般资料本组对例，男门 We observed changes in SpO2 during ketamine-induced endotracheal intubation in 23 children and found a significant decrease in SpO2 in a short period of time. In order to prevent the occurrence of hypoxemia, it is recommended to add Cilostazol under the induction of CMB, and close the mask oxygen for 3 to 5 minutes to avoid the SpO2 drop to dangerous level during intubation and extend the time limit of intubation safety . 1 Clinical data 1.1 General Information The group of cases, male door