In tricuspid atresia, the tricuspid valve is missing. Blood can't flow from the right upper heart chamber (right atrium) to the right lower heart chamber (right ventricle). This condition often includes an underdeveloped right ventricle as well as hole in the heart between the upper chambers (atrial septal defect). Sometimes, there's also a hole between the lower heart chambers (ventricular septal defect).
Mayo Clinic does not endorse companies or products. Advertising revenue supports our not-for-profit mission.
Check out these best-sellers and special offers on books and newsletters from Mayo Clinic Press.
Thanks to generous benefactors, your gift today can have 5X the impact to advance AI innovation at Mayo Clinic.