Clinical Observation of Ropivacaine for Lumbar Plexus Combined with Sciatic Nerve Block

Objective:To investigate the security and efficacy of unilateral combined lumbar plexus with sciatic nerve block with 0.5% or 0.75% ropivacaine.Methods:64 ASA Ⅰ～Ⅱ patients scheduled for unilateral lower limb surgery were studied.The patients were divided into two groups randomly to receive combined lumbar plexus with sciatic nerve block under allocation of the nerve stimulator with either 0.5% ropivacaine or 0.75% ropivacaine.To observe the effectiveness of motor and sensory nerve block,consciously symptoms and the block time 30 minutes after administration.Results:There was no significant difference of onset time between two groups.The block time of motor and sensory nerve in 0.75% ropivacaine group were significant longer than that in 0.5% ropivacaine group.The patients in 0.75% ropivacaine group had more satisfaction.Conclusion:The 0.75% ropivacaine has more consummate effect and longer persistence time than 0.5% ropivacaine,is more suitable for the operationand analgesia of the lower limbs.