Efficacy of Intercostal Block Versus Pectoral Nerve Block II

"Pectoral muscles Nerve block for postsurgical pain, PECS II, based on BUPIVACAINE:~Pectoral muscles nerve block is a procedure in which local anesthetic is injected into two sites.~1. between the major and minor pectoral muscles, in order to anesthetize the lateral and medial nerve. This injection is referred to as PECS I block.~2. between the minor pectoral muscle and the anterior serratus muscle, in order to anesthetize the intercostal nerves."