Inflow-to-Outflow Stent Frame Expansion, Ellipticity, and Decoupling in Evolut TAVR: Implications for Mid-term Hemodynamic Performance.

ABSTRACT:

Background

The native aortic annulus for self-expanding transcatheter aortic valve replacement (TAVR) has variable ellipticity. A noncircular and underexpanded transcatheter aortic valve (TAV) may impact hemodynamic performance. This study aimed to quantify Evolut TAV (Medtronic) frame ellipticity and expansion 30 days post-TAVR and evaluate their impact on 1-year hypoattenuating leaflet thickening and 4-year hemodynamics.

Methods

We retrospectively evaluated 184 patients from the Evolut Low Risk substudy with high-quality computed tomography images. Frame ellipticity ratio and percent expansion were quantified at each frame node level 30 days after TAVR. Variables associated with frame deformation, 1-year hypoattenuating leaflet thickening, and 4-year hemodynamics were iden

SUBMITTER: Puri R 

PROVIDER: S-EPMC11887556 | biostudies-literature | 2025 Jan

REPOSITORIES: biostudies-literature