_:vb50952653 "url:http://en.wikipedia.org/wiki/Tricuspid_insufficiency"^^ . _:vb50952653 . _:vb50952653 . _:vb50952653 . _:vb50952653 "A tricuspid valve disease that is characterized by failure of the heart's tricuspid valve to close properly during systole. As a result, with each heart beat, blood is pumped out from the right side of the heart in the opposite direction to normal."^^ . _:vb50952653 . _:vb50952653 .