Evaluation of Analgesia for Cardiac Elective Surgery in Children

Children randomized to the methadone arm will include standardized perioperative care and analgesia, including intraoperative intravenous methadone (1st dose: 0.1 mg/kg up to a maximum of 5 mg before incision; 2nd dose: 0.1 mg/kg up to a maximum of 5 mg 4 hours after 1st dose) and postoperatively, up to 4 oral or IV doses of methadone (0.1 mg/kg up to a maximum of 5 mg) every 12 hours before discharge as part of standardized multimodal analgesia in the hospital setting.

Children randomized to the standard-of-care arm will receive standard opioid analgesia protocol without intra- and post-operative methadone per the current site standards.