前言：目的观察低浓度布比卡因复合芬太尼硬膜外阻滞麻醉用于分娩镇痛对胎儿和新生儿的安全性及对产程的影响。
Objective:To investigate the anesthetic efficacy of epidural low concentration bupivacaine together with fentany1 during delivery and their safety to the newborn.
前言：目的观察低浓度布比卡因复合芬太尼硬膜外阻滞麻醉用于分娩镇痛对胎儿和新生儿的安全性及对产程的影响。
Objective:To investigate the anesthetic efficacy of epidural low concentration bupivacaine together with fentany1 during delivery and their safety to the newborn.
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