Total Anomalous Pulmonary Venous Drainage TAPVD

  • The Pulmonary Veins, which carry blood back to the heart after it has circulated through the lungs, are not connected to the left atrium. Instead they are connected to one of the veins from the main circulation so that the blood returning from the lungs drains back to the right side of the heart.  In the example illustrated here all the pulmonary veins are connected to the Superior Vena Cava (SVC). This is referred to as 'Supracardiac' TAPVD.


    Infracardiac TAPVD

    In this form of the defect the blood returning from the lungs returns through the Inferior Vena Cava and is often 'obstructed', leading to early onset of severe symptoms.