Quadratus Lumborum Blocks for Pediatric Bone Marrow Harvesting: A Case Report.

Bone marrow harvesting is a means to obtain stem cells to treat certain hematologic conditions in related or unrelated individuals. The most cited complication after bone marrow harvesting is surgical site pain. We developed a protocol incorporating regional anesthesia to improve pain control and reduce opioid use. A retrospective chart review was performed on three pediatric patients who underwent bone marrow harvesting for a sibling recipient and were managed via a standardized regional pain protocol. Each patient was treated with bilateral quadratus lumborum blocks in the operating room, prior to incision. Anesthesia records were reviewed for opioid administration intraoperatively and postoperatively. Two of three patients underwent successful QL blocks as evidenced by pain scores of 0/10 and lack of opioid administration in the post-anesthesia care unit. One patient was found to have a failed block and exhibited pain in the immediate and post-discharge time frame. Following this outpatient procedure, all patients were discharged home to the care of their parents, and no patients required admission due to pain. By utilizing the framework of a successful regional anesthesia model adapted from our adult bone marrow donor patients, we were able to employ a minimal opioid anesthetic and reunite patients with their families efficiently. We continue to use quadratus lumborum blocks in our pediatric patients to facilitate perioperative analgesia.