What is a tetralogy of fallot?

VSD-overriding aorta: Tetralogy of fallot is a congenital heart anomaly consisting of ventricular septal defect, right ventricular hypertrophy, pulmonary stenosis and aortic override of the vsd. It causes blue spells in undiagnosed neonates from poor blood oxygenation. It accounts for 5-10% of all congenital cardiac defects and is typically sporadic and non-syndromic. 15% of cases have aneuploidy (down) or digeorge.

TOF: A type of congenital (present at birth) heart disease that usually causes cyanosis (blue baby). It is characterized by a large hole in the heart (vsd) and obstruction of blood flow to the lungs (pulmonary stenosis). Babies born with tof require surgery during infancy.

TOF: Tetrology of Fallot is a congenital heart defect consisting of defect in the wall between the ventricles, stenosis of the pulmonary artery, enlargement of the right ventricle, and an abnormally placed aorta. It occurs in about 5 out of every 10,000 babies. The defect affects boys and girls equally. It is corrected with open heart surgeries.