Stent Frame Infolding of a 34-mm Evolut-R in a Patient With a Mechanical Mitral Valve

A 71-year-old woman with previous mechanical mitral valve implantation and tricuspid annuloplasty was admitted for transcatheter aortic valve replacement for symptomatic severe aortic stenosis. Multidetector computed tomography showed a large and elliptic aortic annulus with an estimated