A heart in which the lower section is fully reversed.

An unclosed hole in the aorta.

The pulmonary valve does not exist, and the only blood receiving oxygen is the blood that is diverted to the lungs through openings that normally close during development.

A thickened or fused heart valve that does not fully open. The pulmonary valve allows blood to flow out of the heart, into the pulmonary artery and then to the lungs.

A heart defect that features four problems. They are: a hole between the lower chambers of the heart an obstruction from the heart to the lungs The aorta (blood vessel) lies over over the hole in the lower chambers The muscle surrounding the lower right chamber becomes overly thickened.

A defect in the veins leading from the lungs to the heart. In TAPVC, the blood does not take the normal route from the lungs to the heart and out to the body. Instead, the veins from the lungs attach to the heart in abnormal positions and this problem means that oxygenated blood enters or leaks into the wrong chamber.

There is no tricuspid valve in the heart so blood cannot flow from the body into the heart in the normal way. The blood is not being properly refilled with oxygen it does not complete the normal cycle of body -heart –lungs- heart - body.

When a person has one large artery instead of two separate ones to carry blood to the lungs and body.

VSD is a hole in the wall separating the two lower chambers of the heart.