



Pulmonary atresia is an extremely rare form of congenital heart disease in which the pulmonary valve does not form properly. The pulmonary valve is a flap-like opening on the right side of the heart that allows blood to move to the lungs.
In pulmonary atresia, a solid sheet of tissue forms where the valve opening should be. Because of this defect, blood from the right side of the heart cannot go to the lungs to pick up oxygen.
Atresia - pulmonary; PA/IVS