Left Ventricular Outflow Tract Obstruction: A Potential Obstacle for Transcatheter Mitral Valve Therapy.


Department of Medicine, Montreal Heart Institute, Montreal, Quebec, Canada; Université de Montréal, 5000 rue Belanger, Montreal, Quebec H1T1C8, Canada. Electronic address: [Email]


Transcatheter mitral valve replacement is the focus of much enthusiasm as the future of therapy for mitral valve disease. Despite technological advances, left ventricular outflow tract (LVOT) obstruction from the valve prosthesis remains an important issue. In this review the authors discuss the pathophysiology of LVOT obstruction in both the surgical and transcatheter experience, imaging evaluation preprocedure, outcomes to date, and therapeutic options.


Left ventricular outflow tract obstruction,Mitral valve disease,Transcatheter mitral intervention,