Risk factorsBy Mayo Clinic staff
While the exact cause of tetralogy of Fallot is unknown, several factors may increase the risk of a baby being born with this condition. These include:
- A viral illness in the mother, such as rubella (German measles), during pregnancy
- Maternal alcoholism
- Poor nutrition
- A mother older than 40
- A parent with tetralogy of Fallot
- Babies who are also born with Down syndrome or DiGeorge syndrome
- Tetralogy of Fallot. National Heart, Lung, and Blood Institute. http://www.nhlbi.nih.gov/health/health-topics/topics/tof. Accessed Nov. 2, 2011.
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- Tetralogy of Fallot. Centers for Disease Control and Prevention. http://www.cdc.gov/ncbddd/heartdefects/TetralogyOfFallot.html. Accessed Nov. 2, 2011.
- Apitz C, et al. Tetralogy of Fallot. The Lancet. 2009;374:1462.
- Warnes CA, et al. ACC/AHA 2008 guidelines for the management of adults with congenital heart disease. 2008;118:714.