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Updated: Dec 22, 2025

Transcatheter Pulmonary Valve Replacement from Autologous Pericardium with a Self-Expandable Nitinol Stent in an Adult Sheep Model
Published on: June 8, 2022
Successful implantation of self-expanding valve for a failed stentless prosthesis
Bessem Gara Ali1, Raoul Bonan1, Danily Villar1
1Department of Cardiac Surgery and Cardiology, Montreal Heart Institute, Université de Montréal, Montreal, Quebec, Canada.
Abstract:
Valve-in-valve transcatheter aortic valve implantation is currently used for failed bioprosthesis. The use of a transcatheter prosthesis in a regurgitant noncalcified root implanted Medtronic Freestyle prosthesis is particularly challenging. We present a successful transaxillary valve-in-valve implantation of a self-expandable transcatheter aortic valve prosthesis in a failed Freestyle bioprothesis implanted eleven years earlier. Tips and tricks are discussed.

