Objective:To compare the efficacy and safety of Ropivacaine Mesylate and Ropivacaine Hydrochloride for axillary brachial plexus block.

• 目的:比较甲磺酸罗哌卡因与盐酸罗哌卡因用于腋路臂丛神经阻滞的有效性和安全性。