QL Block vs EO Plane Block for Pain After Open Kidney Removal
Official title: Quadratus Lumborum Block Versus External Oblique Plane Block for Analgesia After Open Nephrectomy: A Prospective Randomized Clinical Trial
Run by Cairo University · NCT07787221 · Data updated 2026-11-12
In adults undergoing open nephrectomy, researchers will compare two ultrasound-guided nerve blocks (transmuscular quadratus lumborum vs external oblique plane) to see which provides better pain relief and less need for intravenous morphine after surgery.
Quick facts
| Study type | Interventional |
|---|---|
| Ages | 18 Years to 65 Years |
| Sex | All |
| Enrollment | 54 (estimated) |
| Sponsor | Cairo University Academic / other |
| Locations | 2 sites (Cairo and 1 other locations) |
| Status | Recruiting |
| Started | April 1, 2026 |
| Main results expected | April 1, 2027 |
| Study ends | May 1, 2027 |
| Registry record updated | September 1, 2026 |
| Trial ID | NCT07787221 on ClinicalTrials.gov |
Is this trial a fit for you?
✓Likely a good fit
Adults aged 18–65 undergoing open nephrectomy at Cairo University, with ASA II-III and BMI 20–35 kg/m², who consent to participate.
✕Probably not a fit
Patients who do not respond to regional anesthesia or who have contraindications to regional blocks, or who experience no difference in analgesia between blocks, may not benefit.
A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.
What this trial studies
This is a prospective randomized trial in adults undergoing open nephrectomy at Cairo University. Participants will be randomly assigned to receive either a transmuscular quadratus lumborum block or an external oblique plane block under ultrasound guidance, in addition to standard general anesthesia and multimodal pain control. The primary outcome is total intravenous morphine consumption in the first 24 hours postoperatively. Both blocks are performed prior to incision by an experienced anesthesiologist, with bupivacaine used as the local anesthetic. The study aims to determine which regional technique offers superior analgesia for this major abdominal surgery.
Why it matters
Potential benefit: If successful, the preferred block could provide better pain control and reduce opioid use after open nephrectomy.
How similar studies have gone: Regional blocks in abdominal surgery have shown varying analgesic benefits; this study tests a direct comparison between two similar techniques in a specific procedure.
Who can join: the full rules
Show full inclusion / exclusion criteria
\*\*Inclusion Criteria:\*\* * Adult patients aged 18 to 65 years. * Patients undergoing open nephrectomy at the National Cancer Institute, Cairo University. * American Society of Anesthesiologists (ASA) physical status II-III. * Body mass index (BMI) greater than 20 kg/m² and less than 35 kg/m². \*\*Exclusion Criteria:\*\* * Patient refusal to participate. * ASA physical status IV. * Age less than 18 years or greater than 65 years. * BMI less than 20 kg/m² or greater than 35 kg/m². * Known allergy or contraindication to any study medication, including local anesthetics or opioids. * History of psychiatric disorders or chronic pain. * Contraindications to regional anesthesia, including local infection at the injection site, pre-existing neuropathy, or coagulopathy. * Severe organ dysfunction, including cardiac dysfunction (ejection fraction \<40%), respiratory dysfunction (FEV1 \<50% of predicted or requirement for home oxygen therapy), hepatic dysfunction (Child-Pugh class C), or renal dysfunction (estimated glomerular filtration rate \<30 mL/min/1.73 m²).
Where it's running
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Cairo University
Cairo, Egypt Recruiting -
Cairo University
Cairo, Egypt Recruiting
Study contacts
- Principal investigator: Mona H Abdelhamid, MD — Professor of anesthesia
- Study coordinator: Sayed M Abed, MD
- Email: sayed.abed@nci.cu.edu.eg
- Phone: 002-01226806532
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How to take part
- Review the eligibility criteria above with your treating physician.
- Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
- Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.