Tetralogy of Fallot a congenital defect
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Tetralogy of Fallot Tetralogy of Fallot is a congenital heart defect. This is a condition of the heart's structure that's present at birth. Congenital heart defects alter the normal flow of blood through the heart.Tetralogy of Fallot is a rare, complicated heart defect. It occurs in mostly 5 out of every 10,000 ...