When Oxygenated Blood Returns to the Wrong Side of the Heart Introduction Congenital cardiac defects can often be understood by asking three questions: Where is the blood returning from? Where is it going? And where can oxygenated and deoxygenated blood mix? Total Anomalous Pulmonary Venous Return — TAPVR — is a classic “blue baby” lesion … Continue reading Total Anomalous Pulmonary Venous Return