A Comparison of Single and Double Injection Techniques for Axillary Brachial Plexus Block

Objective To evaluate the efficacy and safety of the single and double injection techniques for axmary brachial plexus block.Methods The selected 100 patients who were operated on the antebrachium and hand were randomly divided into two groups:S group(single injection)and D group(double injection),and 50 cases in each groups.In S group,axmary brachial plexus block was performed respectively with 7-gauge needle,and in D group,axmary brachial plexus block over the arillary artery and below the arillary artery...