Trends in volume and risk profiles of patients undergoing isolated surgical and transcatheter aortic valve replacement.

SAVR volume increased initially but declined eventually following the implementation of TAVR program. The distribution of the STS PROM in TAVR cohort changed dramatically with increasing proportion of patients in lower risk categories. These findings suggest the converging patient populations in TAVR and SAVR, which may be associated with the decline in the overall SAVR volume.