Sensory Analysis and Cutaneous Mapping of Different Regional Anesthesia Techniques

This prospective observational study aims to evaluate and compare the sensory block distribution and regression patterns of two regional anesthesia techniques - External Oblique Plane Block (EOPB) and Serratus Intercostal Plane Block (SIPB) - in patients undergoing laparoscopic cholecystectomy. Thirty adult patients (ASA I-III, BMI ≤ 35 kg/m², ≥50 kg) scheduled for elective laparoscopic cholecystectomy procedures will be included, with 20 in each block group. Sensory block areas will be assessed using pinprick test, and dermatomal mapping will visualize the spread. The findings are expected to improve understanding of block behavior and guide multimodal analgesia strategies in laparoscopic cholecystectomy.

NCT Number	NCT07445854
Lead Sponsor	Samsun University
Conditions	Laparoscopic Cholecystectomy, Postoperative Pain Management, Regional Anesthesia
Enrollment	40 participants
Start Date	2025-11-15
Primary Completion	2026-05-15 (estimated)
Study Completion	2026-06-01 (estimated)
Updated on ClinicalTrials.gov	2026-03-03