阶段II确定新斯的明硬膜外腔注射的镇痛浓度。
Phrase II, to determine the concentration of neostigmine for pain relief.
硬膜外分娩镇痛不增加剖宫产率。
Epidural analgesia labor do not increase the rate of cesarean section.
目的：观察硬膜外阻滞镇痛对分娩过程的影响。
Objective: To observe the effect of epidural anesthesia on the childbirth process.
目的：观察硬膜外阻滞镇痛对分娩过程的影响。
Objective: To observe the effect of epidural anesthesia on the childbirth process.
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