Intracoronary recombinant tissue plasminogen activator in an infant with hypoplastic left heart syndrome and complete left main coronary artery thrombosis.

An infant with hypoplastic left heart syndrome (HLHS) presented with complete heart block and severe myocardial dysfunction requiring ECMO support due to complete left main coronary artery (LMCA) thrombosis. Current guidelines for managing coronary artery thrombosis in infants with single ventricle physiology are inadequate. We describe successful LMCA and branch recanalization via intra coronary infusion of recombinant tissue plasminogen activator and discuss management of acute coronary thrombosis in children with single ventricle physiology.