Tricuspid atresia is when the tricuspid valve that controls blood flow between the right upper and right lower chamber is missing. This makes it hard for the heart to pump blood to the lungs to get oxygen. There may also be a hole between the left and right side of the heart that causes oxygen-rich and oxygen-poor blood to mix. A child may also have a smaller than normal right lower chamber and abnormalities of the pulmonary artery and aorta.
Rao PS. Consensus on timing of intervention for common congenital heart diseases: part II - cyanotic heart defects. Indian J Pediatr. 2013 Aug;80(8):663-674.
Tricuspid atresia. Boston Children’s Hospital website. Available at: https://www.childrenshospital.org/conditions-and-treatments/conditions/t/tricuspid-atresia. Accessed March 11, 2021.
Tricuspid atresia. Children’s Hospital of Philadelphia website. Available at: http://www.chop.edu/service/cardiac-center/heart-conditions/tricuspid-atresia.html. Accessed March 11, 2021.
Tricuspid atresia. EBSCO DynaMed website. Available at: https://www.dynamed.com/condition/tricuspid-atresia . Accessed March 11, 2021.
Last reviewed December 2020 by
EBSCO Medical Review Board
Kari Kassir, MD
Last Updated: 3/11/2021
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