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RLB vs ERSP for Postoperative Analgesia in Lap Cholecystectomy

NCT07598162 · Status: NOT_YET_RECRUITING · Phase: NA · Type: INTERVENTIONAL · Enrollment: 100

Last updated 2026-05-20

No results posted yet for this study

Summary

This prospective, randomized, double-blind clinical trial evaluates the comparative effectiveness of ultrasound-guided retrolaminar block (RLB) and erector spinae plane block (ESPB) for postoperative analgesia in patients undergoing laparoscopic cholecystectomy. A total of 100 ASA I-II patients, aged 20-60 years, will be randomly allocated into two equal groups to receive either RLB or ESPB bilaterally following induction of standardized general anesthesia. The primary outcome is the time to first request for rescue analgesia, while secondary outcomes include total morphine consumption within the first 24 hours, postoperative pain scores assessed using the Numeric Rating Scale (NRS), patient satisfaction, and the incidence of adverse events. Pain assessment will be performed at predefined intervals over the first 24 hours postoperatively. The study aims to determine which technique provides superior analgesia with reduced opioid requirements and improved patient outcomes.

Conditions

  • Laparoscopic Cholecystectomy Surgery Postoperative Analgesia

Interventions

BIOLOGICAL

Retrolaminar Block (RLB)

Patients will be positioned laterally, and a curved ultrasound probe will be aligned longitudinally at the T7 vertebra. The vertebral lamina and spinous process will be identified. A needle will be inserted 1 - 1.5 cm lateral to the spinous process, advanced toward the lamina, and 20 mL of LA mixture will be injected into the fascial plane between the lamina and transversus spinae muscles bilaterally.

PROCEDURE

Erector spinae plane block (ESPB)

The blocks will be conducted at the level of the T7 spinous process (SP) with the patient in the lateral position and the arm abducted. Using US ( curved probe ) , the T7 transverse process (TP) is identified by counting from the 12th rib. The US probe is positioned 2 - 3 cm laterally to the SP of T7 and situated over the TP of T7/T8 in the parasagittal longitudinal plane, with the erector spinae muscle (ESM) visualized over the TP. The needle is then inserted and advanced in plane from cephalad to caudad until the needle tip contacts the TP of T7. Following hydro dissection with 2 mL of isotonic saline, which elevates the ESM, 20 mL of LA mixture is administered after several negative aspirations.

Sponsors & Collaborators

  • Sohag University

    lead OTHER

Study Design

Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
DOUBLE
Model
PARALLEL

Eligibility

Min Age
20 Years
Max Age
60 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2026-04-30
Primary Completion
2027-09-30
Completion
2027-09-01

Countries

  • Egypt

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT07598162 on ClinicalTrials.gov