Tetralogy of Fallot (TOF): Animation Explains Heart Defect and Repair

Connect with a specialist: Our world-renowned Heart Center: Meet our heart team: Tetralogy of Fallot is a heart defect made up of four different heart problems: ventricular septal defect, overriding aorta, pulmonary stenosis and right ventricular hypertrophy. These problems result in cyanotic, or blue, skin on babies because of a lack of oxygen. Nationwide Children’s Hospital’s heart animation videos are designed to help patients and famili