What is the Tricuspid atresia?
Tricuspid atresia is congenital absence of the tricuspid valve, without a direct connection between the right atrium and right ventricle.
Tricuspid atresia accounts for 1–3% of all congenital heart disease. An atrial-level right-to-left shunt must be present to be compatible with life.
50% of patients present with cyanosis, and 30% present with signs of heart failure.
The right ventricle is usually hypoplastic, and treatment is surgical palliation with single ventricle repair.
Note that no direct communication between right atrium and right ventricle due to closed tricuspid valve.
Tricuspid atresia, note the fatty tissue between the RA and the RVVSD and ASD are accompanied.
Reference)
Charles S. White, Linda B. Haramati, Joseph Jen-Sho Chen, and Jeffrey M. Levsky (2014), Cardiac Imaging, Oxford university press
