Abstract：Objective To investigate the application effect of different positioning methods in brachial plexus block.Methods From May 2015 to August 2017,100 patients with upper extremity fracture treated in our hospital were selected as study subjects.According to the block randomization method,the patients were divided into the control group(n=50)and the experimental group (n=50).The control group was given traditionally anatomical positioning during the intervention of brachial plexus block.The experimental group was given ultrasound-guided positioning.The doses of anesthetics,the duration of analgesia,the onset time of anesthesia,the duration of block operation,the anesthetic effect,and incidence of complications were compared between the two groups.Results The anesthetic dosage in the experimental group was (17.24±2.53)ml,which was ower than that of the control group,the anesthesia onset time was(11.54±2.88)min,and the duration of block operation was(185.52±24.85)s,which were shorter than those of the control group,and the duration of analgesia in the experimental group was(11.41±2.38)h,which was longer than that of in the control group,and the differences were statistically significant(P＜0.05).The excellent and good rate of anesthesia in the experimental group was 98.00%,which was higher than that in the control group,and the difference was statistically significant(P＜0.05).The total incidence rate of complication in the experimental group was 0.00%,which was lower than that in the control group,and the difference was statistically significant(P＜0.05).Conclusion Ultrasoundguided positioning in brachial plexus block can achieve better anesthetic effect and higher safety.
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