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Comparison of TLIP Block and QIP Block for Postoperative Analgesia After Lumbar Spine Surgery

NCT07750418 · Status: NOT_YET_RECRUITING · Type: OBSERVATIONAL · Enrollment: 60

Last updated 2026-08-06

No results posted yet for this study

Summary

This study compares two regional anesthesia techniques used for pain control after lumbar spine surgery: the classic thoracolumbar interfascial plane (TLIP) block and the quadratus lumborum-iliac plane (QIP) block. Patients between 18 and 65 years of age who undergo elective lumbar discectomy (up to two spinal levels) will be observed based on which block their treating anesthesiologist chooses to use as part of routine clinical practice. No randomization or additional intervention beyond standard care will be performed. Researchers will record the total amount of opioid pain medication used in the first 24 hours after surgery, the time until the first request for pain medication, pain scores at several time points after surgery (0, 1, 2, 4, 8, 12, and 24 hours), and any side effects (such as nausea, vomiting, or sedation) or complications related to the block. The aim is to compare the effectiveness and safety of these two techniques in reducing pain and opioid use after lumbar spine surgery.

Conditions

  • Lumbar Disc Herniation
  • Postoperative Pain

Interventions

PROCEDURE

Thoracolumbar Interfascial Plane (TLIP) Block of bupivacaine

Ultrasound-guided injection of 20 mL bilaterally (40 mL total) of 0.25% bupivacaine into the fascial plane between the multifidus and longissimus muscles at the relevant lumbar level, performed at the end of surgery before emergence from anesthesia, as part of routine postoperative analgesia.

PROCEDURE

Quadratus Lumborum-Iliac Plane (QIP) Block

Ultrasound-guided injection of 20 mL bilaterally (40 mL total) of 0.25% bupivacaine into the interfascial plane between the erector spinae and quadratus lumborum muscles at the iliac crest level, performed at the end of surgery before emergence from anesthesia, as part of routine postoperative analgesia.

Sponsors & Collaborators

  • Vezirköprü State Hospital

    lead OTHER

Principal Investigators

  • MEHMET YUSUF YILMAZ, MD · Vezirkopru State Hospital

Eligibility

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

Timeline & Regulatory

Start
2026-08-15
Primary Completion
2026-12-31
Completion
2026-12-31

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 NCT07750418 on ClinicalTrials.gov