Effect of Ultrasound-Guided Quadro-Iliac Plane Block on Postoperative Analgesia After Lumbar Spinal Surgery

NCT07326774 · tracked via the Priya Life Science Turkey tracker

Sponsor

Fatih Sultan Mehmet Training and Research Hospital

Phase

Observational

Started

2026-01-05

Last updated

2026-02-23

Condition(s) studied

Postoperative PainLumbar Spine SurgeryPostoperative Analgesia

Investigational drug(s) / intervention(s)

QIPBLAI

QIPB: Quadro-Iliac Plane Block using local anesthetic.

LAI: The surgeon will perform local anesthetic infiltration (LAI) of the incision site.

Study summary

This prospective observational study aims to evaluate the effect of ultrasound-guided Quadro-Iliac Plane Block (QIPB) on postoperative analgesia in patients undergoing lumbar spinal surgery. Lumbar spinal procedures are commonly associated with significant postoperative pain, which may impair early mobilization and increase opioid consumption. In routine clinical practice, QIPB is increasingly used as part of multimodal analgesia to improve pain control and reduce opioid-related adverse effects.

Adult patients scheduled for elective lumbar spinal surgery under general anesthesia will be followed according to routine clinical care. Postoperative analgesia will be managed with intravenous patient-controlled analgesia (PCA) using tramadol, with or without the addition of ultrasound-guided QIPB, based on the preference of the attending anesthesiologist. No intervention or treatment assignment will be performed by the investigators.

Postoperative pain scores at rest and during movement, opioid consumption, need for rescue analgesics, incidence of nausea and vomiting, and patient satisfaction will be recorded during the first 24 hours after surgery. The findings of this study are expected to provide further clinical evidence regarding the effectiveness of QIPB as part of multimodal analgesia in lumbar spinal surgery.

Eligibility

Sex

ALL

Min age

18 Years

Max age

65 Years

Healthy volunteers

Inclusion Criteria: * Patients aged between 18 and 65 years * American Society of Anesthesiologists (ASA) physical status I-III * Body mass index (BMI) \<35 kg/m² * Scheduled for elective posterior lumbar spinal instrumentation surgery under general anesthesia Exclusion Criteria: * Refusal to participate in the study * Emergency surgery * Local infection or hematoma at the block application site * Previous surgery at the block application site * Presence of coagulopathy * Known allergy or toxicity to local anesthetics * History of hematological, renal, or hepatic disease, or advanced respiratory or cardiac failure * Chronic analgesic use, chronic alcohol consumption, or substance abuse * Inability to speak Turkish or presence of language/communication barriers

Primary outcome measure(s)

Postoperative Pain Intensity — Within the first 24 hours after surgery
Postoperative pain intensity assessed using the Numeric Rating Scale (NRS), where 0 indicates no pain and 10 indicates the worst imaginable pain.

Trial sites (1)

Facility	City	Region	Status
Fatih Sultan Mehmet Training and Research Hospital	Istanbul	Istanbul	Recruiting

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Official registry record

This page summarises publicly available registry data for informational purposes — not medical advice. Eligibility is determined by each study team; patients should discuss participation with their clinician.

View NCT07326774 on ClinicalTrials.gov ↗ ← All trials in Turkey