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为了减轻产妇的分娩阵痛，用适当调整局麻药种类、浓度和剂量的硬膜外阻滞法给计划分娩的初产妇行分娩镇痛，有效率为１００％ ，且可缩短第一产程，而对第二产程、分娩出血量、新生儿评分等均无影响。通过镇痛减轻了产妇的紧张心理，减少了产妇在第一产程中的体力消耗，保证了第二产程的产力，减少了胎儿娩出的损伤，降低助产难度，会阴切口缝合无痛以及缩短急诊中转剖宫产的麻醉准备时间，故在临床上切实可行。
In order to reduce the labor pain of the mother, the epidural block method with appropriate adjustment of the local anesthetic type, concentration and dosage for the first delivery of planned labor for childbirth analgesia has an effective rate of 100% and can shorten the first stage of labor. The second stage of labor, childbirth, neonatal score, etc. no effect. Relieve maternal tension through analgesia, reduce maternal physical exertion in the first stage of labor, ensure the second stage of labor productivity, reduce the fetal delivery of the injury, reduce the difficulty of midwifery, perineal incision painless and shorten Emergency cesarean section anesthesia preparation time, it is clinically feasible.