Objective To evaluate the clinical effects of butorphanol preempitive analgesia on brachial plexus block with ropivacaine.

[ 摘要] 目 评价布托啡诺痛对罗哌卡因臂丛阻滞效果影响。

As single laevo-enantiomers,ropivacaine and levobupivacaine which have been generally researched are attracting extensive attention for their better anaesthetic effect and less system toxicity.

近年研较多罗哌卡因和布比卡因作为单一对映异构体,因其良好局麻效应和较小全身毒性正引起广泛关注。