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Tetralogy of Fallot (cont.)

Tetralogy of Fallot Causes

Tetralogy of Fallot occurs during development of the fetus, before birth, and is therefore termed a congenital birth defect. An error occurs as the fetal heart separates into the chambers, valves, and other structures that make up the normal human heart. No one is really sure why this error occurs.



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Tetralogy of Fallot »

Tetralogy of Fallot (TOF) is one of the most common congenital heart disorders (CHDs).

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