Smoking In terms of the cause of<unk> , there is uncertainty as to what instigates this congenital heart defect. Potential risk factors that can cause this congenital heart defect are those the pregnant mother may come in contact with, such as: * Certain medications * Diet * Smoking
Pulmonary atresia
Pulmonary agenesis
Congenital diaphragmatic hernia
Pulmonary hypoplasia
Tracheal agenesis
Double aortic arch
First arch syndrome
Gastric atresia