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Self-Expandable Prosthesis Valve Adaptation: Non-Uniform Expansion and Stent Frame Decoupling.
Am J Cardiol
November 2023
Departments of Cardiovascular Surgery, Maria Eleonora Hospital, GVM Care & Research, Palermo, Italy; Department of Surgical, Oncological and Stomatological Sciences (DICHIRONS), University of Palermo, Palermo, Italy.
The incidence of non-uniform expansion in the context of the self-expandable transcatheter heart valve (THV) is little investigated, along with stent-frame decoupling, which is a form of stent adaptation, in which the lower part of the THV stent conforms to both the ellipticity of the left ventricle outflow tract and the native annulus while maintaining the higher part of the valve more circular. We analyzed post-implant multi-detector computed tomography scans in 50 patients. Prosthesis non-uniform expansion was assessed by computing the prosthesis eccentricity on 6 prespecified levels: (1) frame inflow, (2) native annulus, (3) leaflet inflow, (4) prosthesis waist, (5) leaflet outflow, and (6) frame outflow.
View Article and Find Full Text PDFStent-frame decoupling following self-expandable transcatheter aortic valve replacement.
J Cardiovasc Comput Tomogr
February 2024
Dept. of Cardiovascular Surgery, Maria Eleonora Hospital, GVM Care&Research, Palermo, Italy; University of Palermo, DICHIRONS, Italy.
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