The article in this issue of the Journal by Mastropietro and colleagues1 investigates in-hospital adverse outcomes and their determinants among patients with truncus arteriosus undergoing complete primary repair at 15 selected institutions from 2009 to 2016. Among the 216 patients included, the in-hospital mortality was 6.9%, and the prevalence of major adverse cardiac events (MACE), defined as intraoperative or perioperative cardiopulmonary resuscitation, extracorporeal membrane oxygenation, or death, was 20%.
