Intentional Oversizing of Valve in Transcatheter Aortic Valve Replacement: Is Bigger Better? A Large, Single-Center Experience.

These data suggest that, in current self-expanding valves, >20% oversizing delivers a significantly lower prevalence of paravalvular leak without an increase in other complications. Since paravalvular leak is associated with increased mortality, >20% oversizing may represent a superior prosthesis choice.