Tetralogy of Fallot

In medicine, the Tetralogy of Fallot is a significant and complex congenital defect[?] of the heart, involving four different heart malformations[?]:

1. The first is a ventricular[?] septal defect (VSD), a hole between the two bottom chambers (ventricles) of the heart.
2. The second is Pulmonary stenosis[?], a narrowing at or just below the pulmonary valve[?].
3. The third is the aorta is positioned over the ventricular septal defect instead of in the left ventricle.
4. Fourth, the right ventricle is more muscular than normal.

External links