In this case, the per capita income, or average income per person, would be equal to approximately $48,000. National economic indicators such as GDP or GNP are typically quoted on a per capita basis when presented in the media.n this case, the per capita income, or average income per person, would be equal to approximately $48,000. National economic indicators such as GDP or GNP are typically quoted on a per capita basis when presented in the media.
Definition. Tricuspid atresia is a heart defect present at birth (congenital) in which one of the valves (tricuspid valve) between two of the heart's chambers â the upper right chamber (right atrium) and the lower right chamber (right ventricle) â isn't formed.efinition. Tricuspid atresia is a heart defect present at birth (congenital) in which one of the valves (tricuspid valve) between two of the heart's chambers â the upper right chamber (right atrium) and the lower right chamber (right ventricle) â isn't formed.
Back to Top Causes. The tricuspid valve separates the right lower heart chamber (the right ventricle) from the right upper heart chamber (right atrium). The most common cause of tricuspid regurgitation is enlargement of the right ventricle, which pumps blood to the lungs, where it picks up oxygen. This enlargement may be a complication of any disorder that causes extra strain on the right ventricle.