Tricuspid Atresia By Lee B Beerman, MD, Children's Hospital of Pittsburgh of the University of Pittsburgh School of Medicine Reviewed / Revised Apr 2023 View Patient Education Symptoms and Signs Diagnosis Treatment Key Points More Information Topic Resources Tricuspid atresia with normally... Finger Clubbing Modified Blalock-Taussig-Thomas... Tricuspid atresia is absence of the tricuspid valve accompanied by a hypoplastic right ventricle.