Utilizing Peripheral Nerve Blocks for Pain Management in Pediatric Patients during Embolization and Sclerotherapy for Vascular Malformations.

Vascular anomalies are a diverse group of abnormal blood vessel developments that can occur at birth or shortly afterward. Embolization and sclerotherapy have been utilized as a treatment option for these malformations but may cause moderate-to-severe pain. This study aims to evaluate the utilization of peripheral nerve blocks in opioid consumption, pain scores, and length of stay. A retrospective chart review was conducted at the UPMC Children's Hospital of Pittsburgh for all patients who underwent embolization and sclerotherapy between 2011 and 2020. Patient data were collected to compare opioid consumption, pain scores, and length of stay. In total, 854 procedures were performed on 347 patients. The morphine milligram equivalent per kilogram mean difference between groups was 0.9 (0.86, 0.95) with a