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Coupled Fluid-Structural Analysis of Heart Mitral Valve

A. Avanzini, and G. Donzella
Department of Mechanical and Industrial Engineering, University of Brescia, Brescia, Italy

The mitral valve apparatus is a complex and refined mechanism located between the left atrium and the left ventricle of the heart which can manifest various kinds of pathologies.

In order to support identification of potentially critical conditions resulting from some typical cardiosurgery operations, it is important to develop models of the mitral valve that enable prediction of both stress in the leaflets and blood flow pressure gradient and velocity across the valve during the cardiac cycle.

In this paper a modeling approach considering fluid-structure interaction using COMSOL Multiphysics is described. The Multiphysics approach has been found to be useful in evaluating the most important surgical parameters: pressure gradient between left atrium and ventricle during diastolic phase, and maximum fluid velocity and stresses in the valve leaflet.