How is tricuspid atresia diagnosed?

In most cases, a doctor will use an echocardiogram to diagnose tricuspid atresia. An echocardiogram uses high-pitched sound waves that bounce off the child’s heart, producing moving images that the doctor can see on a video screen.

If your child has tricuspid atresia, the echocardiogram shows that the tricuspid valve is absent and that the right ventricle is smaller than normal. This test, which tracks the flow of blood, also can determine how much blood is moving through the holes in the septum. An echocardiogram also can show related defects of the heart, including a ventricular septal defect or an atrial septal defect.

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