目的：研究国产左旋布比卡因对蛛网膜下腔阻滞的效果。
Objective: To investigate the effect of levobupivacaine for spinal subarachnoid block.
比较老年患者下肢手术罗哌卡因与布比卡因蛛网膜下腔阻滞效果。
Objective: To compare the efficiency of ropivacaine and bupivacaine for spinal anesthesia in elderly patients undergoing lower limb surgery.
目的观察模拟舰船摇摆状态对0.75%罗哌卡因蛛网膜下腔阻滞的影响。
Objective To observe the influence of simulated state of swaying naval vessels on spinal anesthesia using 0.75% ropivacaine.
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