This occurs when babies are born with a hole in the wall between the heart’s two upper chambers. In severe cases, it can lead to pulmonary hypertension, irregular heart rhythms and stroke.

The aortic valve, which controls blood flow from the heart to the aorta, has two valves instead of three. It can cause abnormal blood flow and enlargement of the aorta.

The left side of the heart doesn’t form correctly, hampering its ability to pump blood. This often leads to the need for a Fontan procedure and single ventricle physiology.

A defect prevents the closing of the opening between the aorta and the pulmonary artery, which sends blood to the lungs. In severe cases, it can lead to rapid heartbeat, poor weight gain, heart murmurs and respiratory infections.

An abnormally small portion of the aorta does not allow blood to get to the lower body. This often requires surgery or stent placement.

This occurs when there is a hole in the heart as well as a problem with the pulmonary valve. Some babies get surgery early in life and others can wait a few months.

This is one of the most common congenital heart defects that often requires valve replacement.

This is a rare condition that causes pulmonary hypertension, a type of high blood pressure affecting the lungs and right side of the heart. It often results from a congenital heart defect that was not treated in early childhood. Symptoms include bluish skin, shortness of breath, fatigue or rounded fingers and toes (clubbing).