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Epidemiology

Last reviewed dd mmm yyyy. Last edited dd mmm yyyy

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Tetralogy of Fallot accounts for about 6% of congenital heart disease and is the third most common cyanotic congential heart malformation.

There is a 25% risk in patients with an affected sibling, and a 4% risk with an affected parent.

It is the most common cause of cyanosis after one year.


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