HEMODYNAMIC PERFORMANCE OF TRANSCATHETER HEART VALVES WITH SUPRA-ANNULAR OR INTRA-ANNULAR POSITION FOR TRANSCATHETER AORTIC VALVE-IN-VALVE IMPLANTATION

Transcatheter aortic valve-in-valve implantation (ViV) is increasingly used for treatment of failed bioprostheses. Elevated gradients, however, remain a challenge and data from in-vitro studies suggest transcatheter heart valves (THV) with supraannular position may result in improved hemodynamic