Erector Spinae Block Versus Shoulder Periarticular Anesthetic Infiltration for Arthroscopic Shoulder Surgery

"1. Preoperative US guided ESP blockade using 30 mL of 0.25% bupivacaine with 5 mcg/mL of epinephrine, injected in 5-mL aliquots through the needle (maximum of 3 mg/kg)~2. PAI of 30 mL of saline at the end of the surgical procedure on the operated side rotator cuff, injected in 5-mL aliquots through the needle"

"1. Preoperative US guided ESP blockade using 30 mL of saline, injected in 5-mL aliquots through the needle~2. PAI of 30 mL of 0.25% bupivacaine with 5 mcg/mL of epinephrine at the end of the surgical procedure on the operated side rotator cuff, injected in 5-mL aliquots through the needle"