Sensory Analysis and Cutaneous Mapping of Different Regional Anesthesia Techniques

Recruiting now

Conditions studied: Laparoscopic Cholecystectomy, Postoperative Pain Management, Regional Anesthesia

In brief

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.

Key facts

Study ID: NCT07445854
Run by: Samsun University
People needed: 40
Starts: 2025-11-15
Expected to finish: 2026-06-01
Last updated by the study team: 2026-03-03

Who can join

Age: 18 and older, up to 75. Sex: any. Healthy volunteers: not accepted.

You may qualify if…

Patients scheduled for elective laparoscopic cholecystectomy surgery and who have received a regional anesthesia technique for this purpose.
Aged between 18-75 years.
Belonging to ASA I-III group.
Having provided written informed consent.

You may not qualify if…

Patients who refuse to participate.
Patients who did not receive a block.
Patients classified as ASA IV.
History of previous abdominal surgery (affecting the laparoscopic approach).
Patients with cognitive dysfunction or inability to cooperate.
Patients diagnosed with psychiatric disorders (schizophrenia, mania, depression, etc.).
Patients who have been using antipsychotic medication for more than 4 weeks.

Where it is running

Samsun University, Samsun Training and Research Hospital — Samsun, Ilkadım, Turkey (Türkiye) (enrolling)

Full record on ClinicalTrials.gov

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