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Updated: Feb 15, 2026

Layer Microdissection of Tricuspid Valve Leaflets for Biaxial Mechanical Characterization and Microstructural Quantification
Published on: February 10, 2022
A persistent giant Eustachian valve: functional tricuspid atresia in a newborn
Konstantinos Sideris1, Janez Vodiskar1, Ruediger Lange1
1Department of Cardiovascular Surgery, German Heart Center Munich, Technical University Munich, Munich, Germany.
Abstract:
Persistent right valve of the systemic venous sinus is a rare anomaly with anatomical variations. This anomaly may present as an obstructive structure that can inhibit the antegrade flow through the tricuspid valve. We report on a 4-day-old neonate who presented with pronounced peripheral and central cyanosis. Echocardiographic examination showed a giant Eustachian valve moving towards the tricuspid valve during late systole and leading to complete obstruction of the inflow. Blood flow was redirected through the persistent foramen ovale, producing a right-to-left shunt.
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