Tetralogy of fallot is the most common form of cyanotic heart defects, more commonly known as "blue babies." Infants are diagnosed at birth through an abnormal newborn screening, by detecting a murmur, or by seeing the baby is not a normal color.
Tetralogy of fallot includes four different heart problems:
- Pulmonary stenosis (a narrowing of the blood vessel to the lungs)
- An overriding aorta (the main blood vessel from the heart to the entire body is displaced)
- A ventricular septal defect (hole in the wall between the lower two chambers of the heart)
- Right ventricular hypertrophy (a thick muscle in the right pumping chamber)