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分娩疼痛源自子宫及会阴部的伤害感受器,阻滞痛觉传入纤维是硬膜外麻醉的基础。随机选择123例健康足月临产、无硬膜外麻醉禁忌证的初产妇,均为头先露,宫口扩张不超过4 cm。实验组55例,用硬膜外麻醉,初始量为0.25%布比卡因4 ml及6 ml,维持量为0.125%布比卡因6~10 ml/h,+0.000 2%芬太尼使麻醉平面达T_(10)水平。对照组68例,肌注杜冷丁75~100 mg并吸入entonox,1次/4~6 h。记录两组产妇一般情况,胎儿出生孕周体重、枕位、分娩方式、新生儿1~5分钟Apgar评分及需特殊护理率,产妇对分
Labor pain from the uterus and perineal nociceptors, block painful afferent fibers is the basis of epidural anesthesia. 123 cases of healthy full-term labor were randomly selected, primipara without contraindications to epidural anesthesia were first Xianlu, cervical dilatation does not exceed 4 cm. In the experimental group, 55 cases were treated with epidural anesthesia with initial doses of 0.25% bupivacaine 4 ml and 6 ml, maintenance dose 0.125% bupivacaine 6-10 ml / h, + 0.000 2% fentanyl Anesthesia plane reached T_ (10) level. The control group of 68 patients, intramuscular injection of pethidine 75 ~ 100 mg and inhalation entonox, 1/4 ~ 6 h. Record the general situation of two groups of maternal, gestational age at birth weight, pillow, mode of delivery, neonatal 1 to 5 minutes Apgar score and the need for special care rates, maternal points