Tetralogy of Fallot

Tetrlogy of Fallot Tetralogy of Fallot This is a rare, complex congenital heart defect . A congenital heart defect is a problem with the heart's structure that's present at birth. This involves four heart defects: A large ventricular septal defect (VSD) Pulmonary stenosis Right ventricular hypertrophy An overriding aorta Tetralogy of Fallot Symptoms/Signs With tetralogy of Fallot, not enough blood is able to reach the lungs to get oxygen, and oxygen-poor blood flows to the body. Doctors often don't know what causes tetralogy of Fallot. Some conditions or factors that occur during pregnancy may raise your risk of having a child who has tetralogy of Fallot. Heredity and some genetic disorders also may play a role in causing the condition. Cyanosis is an important sign of tetralogy of Fallot. Cyanosis is a bluish tint to the skin, lips, and fingernails. Low oxygen levels in the blood cause cyanosis. Other signs and symptoms include a heart murmur, d...