{"id":"quadratus-lumborum-ql-block","safety":{"commonSideEffects":[{"rate":null,"effect":"Local anesthetic toxicity"},{"rate":null,"effect":"Nerve injury"},{"rate":null,"effect":"Vascular puncture"},{"rate":null,"effect":"Peritoneal puncture"}]},"_chembl":null,"_dailymed":null,"mechanism":{"_ai_source":"claude-haiku-4.5","explanation":"The quadratus lumborum block targets the thoracolumbar fascia and muscle plane, anesthetizing branches of the spinal nerves that supply the lower abdominal wall, flank, and lower back. This regional anesthesia approach provides perioperative pain relief and reduces the need for systemic opioids. It is a procedural intervention rather than a pharmaceutical drug.","oneSentence":"A QL block is a regional anesthesia technique that delivers local anesthetic to the quadratus lumborum muscle plane to block pain signals from the lower abdomen and flank.","_ai_confidence":"medium"},"_scrapedAt":"2026-03-28T00:03:29.862Z","_scrapedBy":"cloudflare-swarm","_wikipedia":null,"indications":{"approved":[{"name":"Perioperative analgesia for abdominal and flank surgery"},{"name":"Postoperative pain management for lower abdominal procedures"}]},"trialDetails":[{"nctId":"NCT07280182","phase":"NA","title":"Effect of the Quadratus Lumborum Block Versus the Lumbar Plexus for Spiral Thighplasty Surgery","status":"COMPLETED","sponsor":"Menoufia University","startDate":"2025-12-13","conditions":"Analgesia","enrollment":42},{"nctId":"NCT07398573","phase":"","title":"Comparison of Caudal and Quadratus Lumborum Blocks With Pain Monitoring in Children","status":"NOT_YET_RECRUITING","sponsor":"Ankara Etlik 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Pediatric Hip Surgery","status":"COMPLETED","sponsor":"Alexandria University","startDate":"2022-05-06","conditions":"Pain, Postoperative, Developmental Dislocation of Hip","enrollment":40},{"nctId":"NCT04552548","phase":"NA","title":"Quadratus Lumborum Block Versus Transversus Abdominis Plane Block for Postoperative Analgesia in Children","status":"COMPLETED","sponsor":"Minia University","startDate":"2019-10-01","conditions":"Postoperative Pain","enrollment":90},{"nctId":"NCT05348421","phase":"NA","title":"Postoperative Analgesic Effect of Two Peripheral Nerve Blocks for Hip Surgery in Pediatrics","status":"COMPLETED","sponsor":"Alexandria University","startDate":"2022-05-06","conditions":"Pain, Postoperative, Developmental Dysplasia of the Hip, Regional Anesthesia Morbidity","enrollment":60},{"nctId":"NCT05444309","phase":"NA","title":"Ultrasound Guided Pericapsular Nerve Group Block Versus Quadratus Lumborum Block","status":"COMPLETED","sponsor":"Zagazig 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in Colorectal Surgery","status":"COMPLETED","sponsor":"Indiana University","startDate":"2018-08-30","conditions":"Colorectal Surgery","enrollment":90},{"nctId":"NCT04074226","phase":"NA","title":"ESP vs QL for Total Abdominal Hysterectomy","status":"TERMINATED","sponsor":"University of Texas Southwestern Medical Center","startDate":"2021-03-20","conditions":"Postoperative Pain","enrollment":17},{"nctId":"NCT05191966","phase":"NA","title":"Subcostal Approach to Anterior Quadratus Block Versus Thoracic Paravertebral Block for Laparoscopic Nephrectomy","status":"COMPLETED","sponsor":"Ondokuz Mayıs University","startDate":"2022-09-01","conditions":"Anesthesia, Analgesia, Acute Pain","enrollment":30},{"nctId":"NCT04852874","phase":"NA","title":"Quadratus Lumborum Block as an Anesthetic Method for Percutaneous Nephrolithotomy","status":"UNKNOWN","sponsor":"Al-Azhar University","startDate":"2021-04-03","conditions":"Quadratus Lumborum Block, Percutaneous Nephrolithotomy, Local Anesthesia","enrollment":100},{"nctId":"NCT05504525","phase":"NA","title":"Fascia Iliaca Versus Quadratus Lumborum Block for Pain Management in Total Hip Replacement.","status":"COMPLETED","sponsor":"Ain Shams University","startDate":"2022-05-30","conditions":"Postoperative Opioid Requirements in Patients With Traumatic Fracture Hip","enrollment":68},{"nctId":"NCT04073056","phase":"PHASE4","title":"Efficacy Of Quadratus Lumborum II Block For Laparoscopic Sleeve Gastrectomy","status":"COMPLETED","sponsor":"Icahn School of Medicine at Mount Sinai","startDate":"2018-08-01","conditions":"Morbid Obesity, High BMI","enrollment":41},{"nctId":"NCT05617482","phase":"NA","title":"Comparison Between Ultrasound-guided Ilioinguinal, Iliohypogastric Nerve Blocks, TAP Block and Quadratus Lumborum Block in Patients Scheduled for Lower Segment Ceserian Sections.","status":"UNKNOWN","sponsor":"Tanta 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