Comparison of Pre-op and Post-op Pectoralis Nerve Block

PEC I/II blocks by anesthesiologist - pre-operative; PEC I/II block to anesthetize the pectoral, intercostobrachial, third to sixth intercostal and long thoracic nerves. The PEC I/II blocks are pectoralis field blocks where local anesthetic medication is injected under ultrasound guidance between the tissue planes of pectoralis major and minor muscles (PECS I) and in the plane of the serratus anterior muscle at the level of the third rib (PEC II). Group I will have the PEC block administered by the anesthesiologist prior to surgical incision.

PEC I/II blocks by surgeon - intra-operative; PEC I/II block to anesthetize the pectoral, intercostobrachial, third to sixth intercostal and long thoracic nerves. The PEC I/II blocks are pectoralis field blocks where local anesthetic medication is injected under ultrasound guidance between the tissue planes of pectoralis major and minor muscles (PECS I) and in the plane of the serratus anterior muscle at the level of the third rib (PEC II).