Congenital heart defect patients with only mild heart defects who have no symptoms and follow a normal growth pattern will normally not require treatment. However, patients who experience severe symptoms, such as a heart failure, shortness of breath, or becoming easily tired, will likely need to take medication to manage their symptoms. However, if the symptoms do not improve with treatment, then catheter intervention or heart surgery to correct the defects will be required. Certain types of defects, such as a hole in the heart wall can be treated using a heart catheterization so that an open heart surgery can be avoided. During the heart catheterization, a specially designed device can be mounted on the tip of a small plastic tube. This plastic tube can be inserted into a large blood vessel, usually from the groin, and sneaked into the heart to the site of the defect. Then, the device will be deployed to close off the defect.