ArticleAnnals of biomedical engineering2026
Hemodynamic Evaluation for Mitral Valve Replacement.
Article in Annals of biomedical engineering, 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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Authors and funding
6 authors.
Funding
Abstract
purposeMitral valve replacement (MVR) alters the physiological hemodynamic environment in the left ventricle, potentially leading to complications. This in vitro study aims to investigate the impact of different mitral valves (native, bioprosthetic, and mechanical valves) on the flow and blood transport in the left ventricle.
methodsA custom-made left heart simulator was used, considering three different mitral valves: native, bioprosthetic, and mechanical valves. Time-resolved tomographic particle image velocimetry (Tomo-PIV) was employed to obtain three-dimensional ventricular flow. The particle residence time and the apical-transit ratio were quantified by tracking virtual tracers within the measured flow fields.
resultsProsthetic valves fundamentally change diastolic vortex structures. The native valve forms a saddle-shaped vortex ring, the bioprosthetic valve produces a nearly circular vortex ring, and the mechanical valve generates a crescent-shaped starting vortex below the leaflets. Quantitatively, the native valve results in the shortest blood residence time and the highest apical-transit ratio, indicating optimal blood transport efficiency compared to both bioprosthetic and mechanical valves.
conclusionEfficient left ventricular pumping requires not only timely ejection but also physiological vortex-driven apical washout. This insight represents a key consideration for future prosthetic valve design.
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