Objective To investigate the efficacy and safety of 0.75 % ropivacaine and 0.5 % ropivacain for lumbar-sciatic nerve block.

目的研究0.5%、0.75%罗哌卡因用于腰丛联合坐骨神经阻滞的安全性和有效性。

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Results the spinal epidural anesthesia effects of Ropivacain in motor nerve block is more slowly then Bopivacain and the time of motor nerve block is more shorter too.

结果：罗哌卡因对运动神经阻滞较布比卡因起效慢，而且运动神经阻滞时间短。

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