Objective To evaluate the effect of combined subarachnoid epidural analgesia (CSEA) in labor pain relief and its side effects and selective bias in nulliparous women.
目的研究按孕妇意愿选择蛛网膜下腔-硬膜外联合阻滞麻醉用于产时镇痛对分娩的影响。
Epidural catheter was placed after subarachnoid administration in the two groups for labor analgesia.
两组均采取蛛网膜下腔注射并留置硬膜外导管镇痛。
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