Pre-Procedural 6-Min Walk Test as a Mortality Predictor in Patients Undergoing Transcatheter Mitral Valve Repair

The simple, functional 6-min walk test (6MWT) can predict exercise capacity and is widely used to assess treatment outcomes [(1)][1]. Transcatheter mitral valve repair (TMVR) (MitraClip, Abbott Vascular, Menlo Park, California) has become widely adopted for clinical use in high-risk or prohibitive-