Whats a heart defect called supracardiactotal anomalous pulmonary venous return?

Abnormal lung veins: The pulmonary veins are the vessels that normally bring blood with oxygen back to the heart from the lungs. Supracardiac tapvr is when these veins drain to the innominate vein which eventually brings that blood back to the right side of the heart rather than the left. This requires surgical repair. Babies born with this usually have much lower than normal oxygen levels and appear blue.