Janarthanan Sathananthan, Mark Hensey, Rob Fraser, Uri Landes, Philipp Blanke, Hoda Hatoum, Lakshmi Prasad Dasi, Alexander Sedaghat, Vinayak N Bapat, Jonathon Leipsic, Lars Søndergaard, David A Wood, John G Webb
AIMS: The commonly used valve-in-valve (VIV) app recommends sizing based on dimensions of both the transcatheter heart valve (THV) and bioprosthetic surgical valve. The implications of hydrodynamic testing to guide VIV sizing are poorly understood. This bench study assessed the hydrodynamic performance of different sizes of self-expanding supra-annular THVs in three different surgical aortic bioprostheses at different implantation depths. METHODS: A small versus medium ACURATE neo (ACn), and a 26 mm versus 29 mm Evolut R were assessed after VIV implantation in 25 mm Mitroflow, Mosaic, and Magna Ease aortic surgical bioprostheses, at three implantation depths (+2 mm, -2 mm, and -6 mm)...
September 1, 2020: Catheterization and Cardiovascular Interventions