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Ultrasound-Guided vs. Surgeon-Performed (Free-hand) Erector Spinae Plane Block

NCT07454304 · Status: COMPLETED · Phase: NA · Type: INTERVENTIONAL · Enrollment: 102

Last updated 2026-03-10

No results posted yet for this study

Summary

The aim of this study is to compare the analgesic efficacy of ultrasound-guided (USG) lumbar Erector Spinae Plane Block (ESPB) performed by an anesthesiologist versus a "free-hand" ESPB performed intraoperatively by the surgeon in patients undergoing Unilateral Biportal Endoscopic Discectomy (UBE). The investigators hypothesize that Us-guided would provide more effective analgesia, and USG-guided application might provide more precise local anesthetic spread.

Conditions

  • Lumbar Disc Herniation
  • Lumbar Disc Disease

Interventions

DRUG

US-guided ESPB.

At the end of the surgery, the patient in the prone position, an experienced anesthesiologist performed the ESPB using a low-frequency convex ultrasound probe. To avoid potential interference from surgical anatomical distortion at the operative level, the block was performed one vertebral level cranial to the surgical site. Under ultrasound guidance, the transverse process was identified, and 30 ml of 0.25% bupivacaine was injected into the fascial plane between the erector spinae muscle and the transverse process

DRUG

Surgeon-performed (Free-hand) ESPB.

During the UBE procedure, the surgeon performed the ESPB under direct/endoscopic vision. Similar to the USG group, the injection was performed one vertebral level above the targeted surgical level to ensure optimal fascial plane spread, unaffected by surgical tissue disruption. Before wound closure, 30 ml of 0.25% bupivacaine was injected into the space between the erector spinae muscle and the transverse process.

Sponsors & Collaborators

  • Medipol University

    lead OTHER

Study Design

Allocation
RANDOMIZED
Purpose
SUPPORTIVE_CARE
Masking
DOUBLE
Model
PARALLEL

Eligibility

Min Age
18 Years
Max Age
70 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2022-08-01
Primary Completion
2025-12-20
Completion
2025-12-25

Countries

  • Turkey (Türkiye)

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 NCT07454304 on ClinicalTrials.gov