a congenital heart defect which is classically understood to involve four anatomical abnormalities (although only three of them are always present). It is the most common cyanotic heart defect, and the most common cause of blue baby syndrome.
Tricuspid Atresia
Tricuspid fails to form (unopened). No blood flow from RA to RV. Tiny RV. Blood instead shunts across Foramen Ovale or ASD into Pulmonary Arterial system for oxygenation.
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