氯胺酮麻醉镇痛完善，在小儿外科应用极为普遍。但其呼吸抑制亦为临床常见，严重者甚可危及生命。我们对21例接受较复杂手术的小儿采用气管插管氯胺酮麻醉，报告如下。临床资料对象：21例中男13例，女8例，年龄1～8岁，体重8～30kg，均为ASAⅠ～Ⅱ级。手术种类为甲状舌骨囊肿、 Ketamine anesthesia analgesia perfect, very common in pediatric surgery. However, its respiratory depression is also clinically common, even severe cases can be life-threatening. We performed tracheal intratracheal ketamine anesthesia in 21 children undergoing more complicated procedures, as reported below. Clinical data objects: 21 cases of 13 males and 8 females, aged 1 to 8 years old, weighing 8 to 30kg, are ASA Ⅰ ~ Ⅱ grade. The type of operation for thyroid hull cyst,