Congenital Heart Disease

Heart valve defects, also known as valvular heart disease, are flaws in the valves of the heart.

Your heart has four valves with flaps that open and close to help blood flow in a one-way course through the organ. The aortic valve, for example, has three flaps that allow blood to pass from the heart’s left ventricle into the aorta, a major artery that takes blood to the rest of the body. If you were born with a form of congenital heart disease called a bicuspid aortic valve, you have two flaps instead of three.

A bicuspid aortic valve can lead to aortic stenosis, which is when the valve is narrow or stiff. This forces the heart to work harder to pump enough blood. Aortic stenosis can cause shortness of breath during physical activity, lightheadedness and chest pain. A two-flap valve can also allow blood to leak backward into the ventricle, called regurgitation.

A wall called the septum separates the chambers on the left and right sides of your heart. Holes in the septum typically close as a baby grows. But septal defects, or holes in the heart, are those that remain in the wall.

An atrial septal defect, also known as a patent foramen ovale, is a hole between the atria, the heart’s upper chambers. A ventricular septal defect is an opening between the ventricles, or lower chambers.

An atrial septal defect can make you feel like your heart is racing occasionally. An atrial septal defect and a ventricular septal defect can cause shortness of breath.

Some forms of congenital heart disease affect the blood vessels in and around the heart. Patent ductus arteriosus, for example, occurs when a blood vessel called the ductus arteriosus, which normally closes shortly after birth, stays open. This can lead to extra blood entering the pulmonary arteries (arteries in the lungs), straining the heart and lungs. Patent ductus arteriosus can cause shortness of breath.

Another type of defect, transposition of the great arteries, occurs when the roles of two main arteries, the aorta and pulmonary arteries, are reversed. As a result, blood does not flow through the heart as it should, and the body doesn’t get enough oxygen-rich blood. Most people with this form of congenital heart disease have surgery as babies.

• Coarctation of the aorta
• Ebstein anomaly
• Hypoplastic left heart syndrome
• Pulmonary stenosis
• Tetralogy of Fallot
• Tricuspid atresia