【摘要】目的研究0.5%和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。方法选择ASA 1～2级拟行单侧膝关节镜手术患者60例，随机分为两组，每组30例，分别以0.5%和0.75%罗哌卡因在神经刺激仪定位下行腰丛和坐骨神经阻滞。观察患者阻滞后30min感觉和运动阻滞效果，阻滞维持时间，术中患者自觉症状。结果两组患者起效时间无明显差异，但0.75%罗哌卡因组比0.5%罗哌卡因组运动和感觉阻滞维持时间明显延长，差异具有显著性，且患者满意率高。结论0.75%罗哌卡因用于腰丛和坐骨神经联合阻滞时比0.5%罗哌卡因作用更为完善，持续时间更长，对于下肢深部手术和术后镇痛更为适宜。

    【关键词】腰丛神经阻滞；坐骨神经阻滞；罗哌卡因；神经刺激仪

    A comparison and nursing care between two different concentrations of ropivacaine for lumbar plexus combined sciatic nerve block

    HU Jing-yi.Operation Room，Union Hospital，Tongji Medical College，Huazhong University of Science and Technology，Wuhan 430022，China

    【Abstract】ObjectiveTo investigate the efficacy and safety of 0.75% ropivacaine and 0.5% ropivacain for lumbar-sciatic nerve block.MethodsSixty ASA 1-2 patients scheduled for knee arthroscopic surgery were randomly divided into two groups，each group with 30 patients.Lumbar plexus combined sciatic nerve block was performed with the help of a nerve stimulator and 0.75% ropivacaine or 0.5% ropivacain was administered in each group respectively.The blockade effect of motor and sensory nerve in 30 minutes ......