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Updated: Dec 10, 2025

Echocardiographic Evaluation of Atrial Communications before Transcatheter Closure
Published on: February 8, 2022
Prominent Eustachian Valve and Atrial Septal Defect Presenting With Chronic Hypoxemia in a Teenager
Daphney Kernizan1,2, Rami Kharouf1,2, Bradley Robinson1,2
1Nemours Cardiac Center, 25401Nemours/Alfred I. duPont Hospital for Children, Wilmington, DE, USA.
Abstract:
Prominent Eustachian valves, with obligate right-to-left shunts, have been reported as a cause of neonatal hypoxemia. This anomaly can present as an obstructive structure that inhibits antegrade flow through the tricuspid valve and furthermore contributes to right-to-left atrial shunting in the presence of a patent foramen ovale or atrial septal defect. This case highlights the evaluation and diagnostic workup for chronic hypoxemia in an adolescent female patient and considerations for percutaneous atrial septal defect closure.
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