{"id":"quadratus-lumborum-block-qlb","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 QLB is a peripheral nerve block procedure that delivers local anesthetic to the plane between the quadratus lumborum muscle and the adjacent fascia, blocking sensory innervation to the lower abdomen, flank, and lower back. This technique provides analgesia for surgical procedures and postoperative pain management without systemic effects of general anesthesia.","oneSentence":"A regional anesthesia technique that blocks nerve signals in the quadratus lumborum muscle region to provide pain relief for abdominal and flank procedures.","_ai_confidence":"medium"},"_scrapedAt":"2026-03-27T23:36:57.122Z","_scrapedBy":"cloudflare-swarm","_wikipedia":null,"indications":{"approved":[{"name":"Perioperative analgesia for abdominal and flank surgery"},{"name":"Postoperative pain management"},{"name":"Chronic pain conditions affecting the lower abdomen and flank"}]},"trialDetails":[{"nctId":"NCT07487415","phase":"NA","title":"Anterior QLB for PCNL","status":"COMPLETED","sponsor":"Zonguldak Bulent Ecevit University","startDate":"2024-05-01","conditions":"Percutaneous Nephrolithotomy (PCNL), Perioperative Analgesia, Quadratus Lumborum Block","enrollment":54},{"nctId":"NCT07256899","phase":"NA","title":"Analgesic 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Hysterectomy","status":"COMPLETED","sponsor":"Clinical Center Niš","startDate":"2023-02-27","conditions":"Postoperative Pain","enrollment":60},{"nctId":"NCT05602038","phase":"NA","title":"Comparative Study on the Effect of Quadratus Lumborum Block Versus Intrathecal Morphine on the Incidence of Chronic Pain Post Caesarean Section in a University Hospital of Middle-income Country","status":"COMPLETED","sponsor":"Menoufia University","startDate":"2023-02-01","conditions":"Chronic Post Cesarean Pain","enrollment":100},{"nctId":"NCT06058195","phase":"","title":"Comparison of Quadratus Lumborum and Transverse Abdominis Plane Blocks With Intravenous Analgesic in Gallbladder Surgery","status":"UNKNOWN","sponsor":"Saglik Bilimleri Universitesi Gazi Yasargil Training and Research Hospital","startDate":"2023-10-03","conditions":"Cholecystectomy","enrollment":128},{"nctId":"NCT03529201","phase":"NA","title":"QLB After Nephrectomy","status":"COMPLETED","sponsor":"Medical University of Lublin","startDate":"2018-05-07","conditions":"Pain, Postoperative, Chronic Postoperative Pain","enrollment":105},{"nctId":"NCT03404908","phase":"PHASE4","title":"TAP vs QLB in Patients After Cesarean Delivery","status":"COMPLETED","sponsor":"Medical University of Lublin","startDate":"2018-02-07","conditions":"Cesarean Section, Postoperative Pain","enrollment":105},{"nctId":"NCT05713643","phase":"NA","title":"ESPB vs PVB vs QLB After Pelvi-ureteric Surgeries","status":"COMPLETED","sponsor":"Kafrelsheikh University","startDate":"2023-01-30","conditions":"Erector Spinae Plane Block, Paravertebral Block, Quadratus Lumborum Block","enrollment":90},{"nctId":"NCT06129032","phase":"NA","title":"Comparing QLB Type I Block to Intraperitoneal Instillation Added to Wound Infiltration for Postoperative Cesarian Pain","status":"UNKNOWN","sponsor":"Ataturk University","startDate":"2023-11-01","conditions":"Analgesia","enrollment":40},{"nctId":"NCT05408403","phase":"NA","title":"Comparison of the Effects of TFPB and Anterior QLB on Postoperative Analgesia in Cesarean Section Surgery","status":"COMPLETED","sponsor":"Ondokuz Mayıs University","startDate":"2022-06-18","conditions":"Analgesia, Acute Pain, Chronic Pain","enrollment":49},{"nctId":"NCT05056038","phase":"NA","title":"Lateral Versus Posterior Quadratus Lumborum Block in The Pediatric Patients Undergoing Orchiopexy","status":"COMPLETED","sponsor":"Istanbul University - Cerrahpasa","startDate":"2021-07-01","conditions":"Pain","enrollment":103},{"nctId":"NCT05348083","phase":"","title":"Erector Spinae Plane Block (ESPB) Versus Quadratus Lumborum Block (QLB) for Postoperative Analgesia After Caesarean Section","status":"COMPLETED","sponsor":"Fondazione Policlinico Universitario Agostino Gemelli IRCCS","startDate":"2021-12-15","conditions":"Pain, Post Operative, Cesarean Section Complications, Anesthesia, Local","enrollment":52},{"nctId":"NCT05675657","phase":"NA","title":"Quadratus Lumborum Block vs Erector Spinae Plane Block in Abdominal Hysterectomy","status":"COMPLETED","sponsor":"Namik Kemal University","startDate":"2023-01-15","conditions":"Gynecologic Disease","enrollment":81},{"nctId":"NCT05421585","phase":"NA","title":"Comparison of the Effectiveness of Two Different Block in the Management of Postoperative Analgesia After Lumbar Spinal Surgery","status":"COMPLETED","sponsor":"Samsun University","startDate":"2022-08-15","conditions":"The Effect of Two Different Block Methods on Postoperative Pain Management in Lumbar Spinal Surgery","enrollment":57},{"nctId":"NCT05600244","phase":"NA","title":"PENG vs. QLB vs. Lumbar ESPB in Total Hip Surgery","status":"UNKNOWN","sponsor":"Kafrelsheikh University","startDate":"2022-12-15","conditions":"Total Hip Surgery, Pericapsular Nerve, Quadratus Lumborum","enrollment":60},{"nctId":"NCT05918796","phase":"PHASE1","title":"Comparison Between Bupivacaine and Bupivacaine- Dexamethasone QLB for Postoperative Analgesia","status":"COMPLETED","sponsor":"Ain Shams 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Delivery","status":"COMPLETED","sponsor":"Tel-Aviv Sourasky Medical Center","startDate":"2021-08-11","conditions":"Cesarean Delivery; Neuraxial Opioids","enrollment":80},{"nctId":"NCT03966092","phase":"NA","title":"Analgesic Effect of Bilateral Quadratus Lumborum Block in the End of Colorectal Laparosopic Surgery.","status":"COMPLETED","sponsor":"University Hospital, Clermont-Ferrand","startDate":"2019-06-24","conditions":"Post Operative Pain, Laparoscopic Colorectal Surgery","enrollment":44},{"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":"NCT05228028","phase":"NA","title":"Fascia Iliaca Compartment Block Versus Quadratus Lumborum Block in Total Hip Arthroplasty","status":"COMPLETED","sponsor":"Seoul 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