All babies with tetralogy of Fallot need corrective surgery. Without treatment, your baby may not grow and develop properly. He or she is also at increased risk of serious complications, such as infective endocarditis, an inflammation of the inner lining of the heart caused by a bacterial infection.

Untreated cases of tetralogy of Fallot usually develop severe complications over time, which may result in death or disability by early adulthood.

Feb. 23, 2012