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Updated: Aug 3, 2026

Full-root Aortic Valve Replacement by Stentless Aortic Xenografts in Patients with Small Aortic Roots
Published on: May 21, 2017
Root reconstruction: key to neonatal truncal valve repair
Motonori Ishidou1, Hironori Mihara1, Masahiko Nishioka1
1Department of Pediatric Cardiovascular Surgery, https://ror.org/0086pzr68Okinawa Prefectural Nanbu Medical Center and Children's Medical Center, Okinawa, Japan.
Abstract:
Neonatal truncal valve insufficiency carries high postoperative mortality. Mechanical replacement is challenging, and leaflet-sparing repair alone may be insufficient due to fragile tissue and annular dilatation. We report a successful case using geometry-based root reconstruction guided by body-weight-adjusted reference values. This native-tissue approach restored physiologic root geometry, preserved the valve, and enabled growth potential, demonstrating a feasible strategy for durable neonatal repair.
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