What Tetralogy Of Fallot Is Rare, Complex Congenital Heart Defect
What tetralogy of Fallot Is
Tetralogy of Fallot (ToF) is a rare, complex congenital heart defect. It occurs in about five out of every 10,000 babies. When babies are born with ToF, they have four different heart problems:
1. A large ventricular septal defect (VSD) is a hole in the wall between your heart’s main pumping chambers.
2. Pulmonary stenosis involves a narrowing of the pulmonary valve. In a healthy heart, oxygen-poor blood from the right ventricle passes through the pulmonary valve and into the pulmonary artery. Then, the blood travels to the lungs to collect oxygen. In pulmonary stenosis, the pulmonary valve cannot fully open. Thus, the heart has to work harder to pump blood through the valve. As a result, not enough blood gets to the lungs.
3. Right ventricular hypertrophy is where the muscle of the right ventricle is thicker than usual and causes the heart to work harder than normal to move blood through the narrowed pulmonary valve.
4. An overriding aorta is where the major blood vessel is not in place or moved. In tetralogy of Fallot, the aorta is found between the left and right ventricles. As a consequence, oxygen-poor blood from the…