ArticleJTCVS open2026
Biomechanical investigation of tricuspid valve dynamics and the effect of annuloplasty techniques during acute right ventricle pressure overload.
Article in JTCVS open, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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5 authors.
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Abstract
Objective: Current surgical strategy for functional tricuspid regurgitation comprises annular reduction annuloplasty. The substantial recurrence rate points to incomplete understanding of tricuspid valve (TV) -right ventricle (RV) relationship during pathologic loading. This study aims to quantify TV dynamics during progressive right ventricle pressure (RVP) overload, comparing suture-based, rigid ring and flexible band annuloplasty. Methods: In a porcine model, TV-RV geometry was quantified by digital sonomicrometry. Beating-heart TV repair with partial suture-based Kay annuloplasty (n = 9), rigid 3-dimensional ring annuloplasty (n = 10), and flexible band annuloplasty (n = 8) was performed and compared with a control-group (n = 10). Data were collected during baseline and acute RVP overload by pulmonary artery banding. Results: All annuloplasty techniques showed significant annular reduction ( Conclusions: All annuloplasty techniques provide adequate annular stabilization but with different effects on annular geometry and strain distribution. Despite effective annular stabilization, leaflet dynamics were not improved during acute RVP overload. However, annuloplasty prevented increased septal and posterior leaflet retraction during acute radial RV dilatation.
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