Rationale: Blood pressure is higher above the narrowing, and lower below the narrowing. In order to get blood to the lower body, the blood pressure above the coarctation has to rise. Older children may have headaches from too much pressure in the vessels in the head, or cramps in the legs or abdomen from too little blood flow in that region. The effects of coarctation depend on how narrowed the aorta is.
Tetralogy of Fallot.
Rationale: The congenital heart defect known as Tetralogy of Fallot is actually a combination of four separate heart defects. It includes pulmonary stenosis, a thickened right ventricle (known as ventricular hypertrophy), a hole between the lower chambers (known as a ventricular septal defect), and an aorta that can receive blood from both the left and right ventricles, instead of draining just the left.
cyanotic and acyanotic.