Learn more about our Patient Engagement products now! Turn your patients into active participants in their healthcare by giving them easy access to the same evidence-based information you trust – but delivered in an easy-to-understand format.
Tetralogy of Fallot (ToF) is a combination of four heart defects that are present at birth (congenital). ToF develops in an unborn baby early in pregnancy, while the heart is developing. When you have ToF, some blood does not reach the lungs for oxygen, and blood that enters the heart mixes with blood that is leaving the heart. This makes it difficult for the body to get enough oxygen-rich blood.
You may have some symptoms of ToF as an adult, even if you had surgery to correct the defect when you were younger. Symptoms during adulthood depend on the type of defect that you have and how successful your prior surgery was. The most common problem for adults with ToF is a leaky valve between the heart and lungs. Problems in other areas of the heart or lungs can also develop.
The cause of this condition is not known. In some cases, it may be caused by genes that are passed from parent to child (inherited).
You may see a heart specialist (cardiologist) to manage this condition.
This information is not intended to replace advice given to you by your health care provider. Make sure you discuss any questions you have with your health care provider.
Cookies are used by this site. To decline or learn more, visit our cookies page.