Prognostic Value of Exercise Capacity as Evaluated by the 6-Minute Walk Test in Patients Undergoing Transcatheter Aortic Valve Implantation

To the Editor: Determination of individual patient risk for early-term and midterm outcomes following transcatheter aortic valve implantation (TAVI) has predominantly centered on baseline comorbidities, cardiac surgery risk algorithms, and peri-procedural complications. However, there...