在氟烷麻醉下给儿童实施横隔以下的手术,伍用骶管阻滞不但可减少氟烷用量,还能控制术后疼痛。作者选择50例择期下腹部、会阴部或下肢手术,年龄6个月～12岁,预计手术能在150min以内完成者进行观察。患儿体质均佳(ASAⅠ级),随机分成A组(n=25),用0.25％丁哌卡因加肾上腺素1/200,000作骶管阻滞;B组(n=25),则用0.25％丁哌卡因加哌替啶0.5mg/kg和肾上腺素1/200,000作骶管阻滞。患儿术前两小时均 In halothane anesthesia under the diaphragm across the implementation of the following operations, Wu sacral block not only can reduce the amount of halothane, but also control postoperative pain. The authors selected 50 patients undergoing elective lower abdominal, perineal or lower limb surgery, aged 6 months to 12 years old, the operation is expected to be completed within 150min were observed. Children with good constitution (ASA grade Ⅰ) were randomly divided into group A (n = 25), caudal block with 0.25% bupivacaine and epinephrine 1 / 200,000, group B (n = 25) % Bupivacaine plus pethidine 0.5 mg / kg and epinephrine 1 / 200,000 for caudal block. Children with two hours before surgery