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Virtual Pediatric Hospital: Paediapaedia: Tricuspid Atresia Paediapaedia: Cardiovascular Diseases

Tricuspid Atresia

Michael P. D'Alessandro, M.D.
Peer Review Status: Internally Peer Reviewed

Clinical Presentation:
Cyanosis is almost always present at birth and is progressive.

Due to abscence of the tricuspid valve. This leads to an interatrial right to left shunt, usually through a patent foramen ovale. It is classified by the presence or abscence of TGA, pulmonary stenosis, and VSD. The most common form is associated with pulmonary stenosis, and a VSD with a hypoplastic right ventricle.

Not applicable

Imaging Findings:
In the most common form the pulmonary vasculature is decreased and the pulmonary arterial segment is decreased and the heart size is usually normal.


See References Chapter.

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