Question
An ultrasound at 2 months of age suggested the possibility of Tetralogy of Fallot. I’m planning to wait until the child is older for a definitive diagnosis. What are the symptoms of Tetralogy of Fallot? What are the ultrasound manifestations?
Answer
Tetralogy of Fallot is characterized by ultrasound findings such as overriding aorta, ventricular septal defect, pulmonary stenosis, and enlargement of the right ventricle. Adverse prognostic factors for Tetralogy of Fallot include: first, significant collateral formation or ductal reversal. Second, pulmonary artery forward flow greater than 90 cm/s. Third, pulmonary artery to aorta ratio less than 0.5. Fourth, combined with pulmonary valve atresia, one pulmonary artery absent, etc. This heart condition requires treatment.