Serratus vs ESP Block for Postoperative Pain in Unilateral Breast Surgery

This prospective, randomized, assessor-blinded trial compares serratus posterior superior intercostal plane block (SPSIPB) and erector spinae plane block (ESPB) for postoperative analgesia in unilateral breast surgery. 54 patients will be randomized to receive either SPSIPB or ESPB before general anesthesia. The primary outcome is postoperative pain scores within the first 24 hours. The secondary outcome is opioid consumption.

NCT Number	NCT07541040
Lead Sponsor	Engin Çetin
Conditions	Post Operative Pain, Opioid Use
Enrollment	54 participants
Start Date	2026-05-01
Primary Completion	2026-09-01 (estimated)
Study Completion	2026-09-01 (estimated)
Updated on ClinicalTrials.gov	2026-08-06