Evaluating the Effectiveness of Dermal Analgesia Provided by the Application of Lidocaine and Prilocaine Cream 5% on the Puncture Site of Axillary Blocks

Prospective Study, monocentric, controlled, randomized study. Evaluating the effectiveness of dermal analgesia provided by the application of Lidocaine and Prilocaine Cream 5% on the puncture site of axillary blocks.Our study includes 70 patients. Number of subjects required for a 50% difference with the standard deviation of the control group, a significance level of 5% for a 80% power, it takes 23 people per group. Objective power of 90% obtained with 35 patients per group. The expected benefit is the reduction of pain at the skin puncture during the realization of BAX. Improving professional practice and quality care