Prediction of Prosthetic Heart Valve Interaction During Transcatheter Double-Valve Replacement Using a Bench Model.

Transcatheter aortic valve replacement in the presence of a preexisting bioprosthetic mitral valve can lead to significant interaction of the valves. Simultaneous transcatheter aortic valve and mitral valve deployment using balloon-expandable systems further complicates the interaction. We describe preprocedural computed tomography planning using novel parameters and bench tests to predict these interactions and their clinical significance. On the basis of the available anecdotal evidence, we propose a new classification system for the various types of interactions.