PECS I Block vs. Local Infiltration in Breast Augmentation Pain Management

The PECS I block is a regional anesthesia technique performed preoperatively under ultrasound guidance. It involves the injection of 10 mL of 0.5% bupivacaine between the pectoralis major and pectoralis minor muscles to block the medial and lateral pectoral nerves. This procedure targets the right breast in the study to reduce postoperative pain and is compared to local anesthetic infiltration.

Local anesthetic infiltration involves the intraoperative administration of 10 mL of 0.5% bupivacaine under direct visualization into the pectoralis major muscle prior to muscle transection. This procedure targets the left breast in the study for pain management and is compared to the PECS I block.