Fluid-structure interaction analysis of leaflet-annulus geometric mismatch under progressive annular dilation: a parametric study using a pediatric aortic geometry

Résumé fourni par la source

) progressively decreased, accompanied by a reduction in the high-velocity region within the aortic sinus and ascending aorta. In the 26 mm model, the peak first principal stress reached approximately 1249 kPa at the commissures, and the oscillation amplitude of the free margin mid-point reached 5.6 mm, persisting for approximately 0.2 s, indicating impaired dynamic stability under diastolic loading. This parametric study highlights the biomechanical consequences of leaflet-annulus geometric mismatch and provides mechanistic insights that may inform future valve sizing and postoperative management strategies.

Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.