Ultrasound-guided continuous erector spinae plane block for perioperative opioid sparing analgesia in breast cancer surgery: A randomized controlled trial.

Background: Erector spinae plane (ESP) block provides postoperative analgesia in breast surgeries but has limited duration of action that restricts its efficacy to early postoperative period. This study aims to evaluate the analgesic efficacy and opioid sparing effect of ultrasound (US)-guided continuous erector spinae plane (CESP) block in perioperative period in breast cancer surgery.

Methods: Fifty ASA I/II patients aged more than 18 years, scheduled for elective breast cancer surgery were randomized to either Group B (Block group) or Group C (Control group).