Tetralogy of Fallot, also known as blue baby disease, is a congenital heart disease in which different heart diseases occur together. These diseases seen in the heart; Heart hole between the right and left ventricles, stenosis in the pulmonary artery that carries dirty blood or at the outlet of this vessel, thickening of the wall of the right ventricle, and the main aortic artery not being where it should be, and this...