Comparison of Posterior QLB and QIPB in Pediatric Undescended Testis Surgery.
For patients and families
In plain language
An automatic summary of structured registry data. It is an orientation aid, not a substitute for the official protocol or a physician assessment.
- What is being studied
- The protocol lists: Ultrasound-guided Posterior Quadratus Lumborum Block., Ultrasound-guided Quadroiliac Plane Block.
- Who it may be relevant to
- Registry conditions: Postoperative Pain, Cryptorchidism. Basic parameters: 1 year — 7 years · Male.
- What needs checking
- Age, condition and sex are only basic indicators. Prior treatment, laboratory values and other mandatory requirements appear in the eligibility criteria below.
- Where it takes place
- Turkey (Türkiye)
- Next step
- Save the trial, show it to the treating physician, and confirm current recruitment with the study center. Costs, documents and travel →
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Official title
Comparison of the Effects of Posterior Quadratus Lumborum Block and Quadroiliac Plane Block on Analgesic Consumption in Postoperative Pain Management in Pediatric Patients Undergoing Undescended Testis Surgery
Overview
This randomized, double-blind study compares the postoperative analgesic efficacy of ultrasound-guided Posterior Quadratus Lumborum Block (QLB) versus Quadroiliac Plane Block (QIPB) in pediatric patients aged 1-7 years undergoing unilateral undescended testis surgery.
Detailed description
Lower abdominal surgeries, such as undescended testis repair (orchiopexy), are common in pediatric patients and can cause significant postoperative pain. While Posterior Quadratus Lumborum Block (QLB) is a known technique for somatic and visceral analgesia, the Quadroiliac Plane Block (QIPB) is a newer approach targeting the fascial plane posterior to the iliac bone.
In this prospective, randomized, controlled trial, 70 pediatric patients (ASA I-II, aged 1-7 years) will be randomly assigned to receive either a Posterior QLB or a QIPB under general anesthesia. Both blocks will be performed using ultrasound guidance with 0.5 mL/kg of 0.25% bupivacaine.
The study aims to evaluate and compare the analgesic efficacy of these two techniques. Postoperative pain will be assessed using the FLACC scale. Secondary objectives include comparing the time to first rescue analgesic, total analgesic consumption, and incidence of complications.
Interventions
- Procedure Ultrasound-guided Posterior Quadratus Lumborum Block.
Patients will be placed in the lateral decubitus position. Under ultrasound guidance, the probe will be placed at the posterior axillary line. The needle will be advanced to the posterior fascial plane of the quadratus lumborum muscle. A total of 0.5 mL/kg of 0.25% Bupivacaine will be injected. - Procedure Ultrasound-guided Quadroiliac Plane Block
Patients will be placed in the lateral decubitus position. Under ultrasound guidance, the probe will be placed at the level of the iliac crest. The needle will be targeted to the plane where the quadratus lumborum muscle attaches to the iliac bone. A total of 0.5 mL/kg of 0.25% Bupivacaine will be injected
Primary outcome measures
- Postoperative Pain Score (FLACC) at 12 Hours [Time frame: 12 hours post-surgery.]
Secondary outcome measures (4)
- Time to First Rescue Analgesic Request. [Time frame: Up to 24 hours.]
- Total Postoperative Analgesic Consumption [Time frame: 24 hours post-surgery.]
- Incidence of Postoperative Complications. [Time frame: Up to 24 hours.]
- Postoperative Pain Scores (FLACC) at Other Time Points. [Time frame: 30 minutes, 1, 2, 4, 6, and 24 hours post-surgery.]
Eligibility criteria
Inclusion criteria
- Male pediatric patients aged 1-7 years.
- ASA physical status I or II.
- Scheduled for unilateral undescended testis surgery.
- Written informed consent obtained.
Exclusion criteria
- History of neurological deficit or developmental delay.
- Bleeding diathesis or known coagulopathy.
- History of allergy to local anesthetics.
- Infection or skin lesion at the block injection site.
- Congenital spinal anomaly.
- Mental retardation or psychiatric history.
- Liver or kidney dysfunction.
Criteria are shown verbatim from the registry (in English). Final eligibility is always assessed by the study center.
Healthy volunteers: No
Study design
- Allocation
- Randomized
- Model
- Parallel assignment
- Masking
- Triple blind
- Primary purpose
- Supportive care
Study locations
Turkey (Türkiye) · 1 center
- Istanbul Medipol University — Istanbul
Identifiers
NCT: NCT07426796 · 150, 22.01.2026