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Updated: Jun 19, 2026

Echocardiographic Evaluation of Atrial Communications before Transcatheter Closure
Published on: February 8, 2022
Diagnosis of inferior sinus venosus atrial septal defects using transthoracic three-dimensional echocardiography
Chun-An Chen1, Jou-Kou Wang, Jui-Yu Hsu
1Department of Pediatrics, National Taiwan University Hospital, Taipei, Taiwan. chenca@ntu.edu.tw
Abstract:
The authors report the cases of 2 patients with symptoms and signs related to severe pulmonary hypertension. Two-dimensional echocardiography demonstrated defects in the posterior portion of the atrial septum. Transthoracic three-dimensional echocardiography clearly showed inferior sinus venosus atrial septal defects and their relationships with the inferior vena cava, the pulmonary vein, and the muscular border of the fossa ovalis. These 2 cases not only elucidate the potential value of transthoracic three-dimensional echocardiography in delineating the structural characteristics of unusual interatrial shunting but also remind clinicians to be aware of this potentially treatable cardiac defect during workup for pulmonary hypertension.
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