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Updated: Nov 17, 2025

A Simplified Stepwise Approach to Echo Guidance during Percutaneous Mitral Valve Repair
Published on: October 16, 2021
Improvement in right ventricular function by mitral valve closure in hypoplastic left heart syndrome
Dai Asada1, Yoko Kawai1, Yoshinobu Maeda2
1Department of Pediatric Cardiology, Children's Medical Center, Kyoto Prefectural University of Medicine, Kyoto, Japan.
Abstract:
A male neonate presented with the aortic/mitral stenotic variant of hypoplastic left heart syndrome, wherein the suprasystemic left ventricular pressure and relatively large left ventricle had shifted the intraventricular septum. Despite bilateral pulmonary artery banding, the stroke volume was difficult to maintain owing to the compressed right ventricle, causing heart failure symptoms. Percutaneous balloon aortic valvuloplasty decreased the left ventricular pressure, restoring the right ventricular function. Norwood procedure with mitral valve closure after catheter intervention reduced the left ventricular size and improved the right ventricular function. This paper refers to the potential of mitral valve closure for hypoplastic left heart syndrome.
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