Expansion of transcatheter aortic valve replacement in the United States.

Background Patterns of diffusion of TAVR in the United States (U.S.) and its relation to racial disparities in TAVR utilization remain unknown. Methods We identified TAVR hospitals in the continental U.S. from 2012-2017 using Medicare database and mapped them to Hospital Referral Regions (HRR). We calculated driving distance from each residential ZIP code to the nearest TAVR hospital and calculated the proportion of the U.S. population, in general and by race, that lived Results The number of TAVR hospitals increased from 230 in 2012 to 540 in 2017. The proportion of the U.S. population living Conclusion The expansion of TAVR programs in the U.S. has been accompanied by an increase in geographic coverage for all racial subgroups. Further study is needed to determine reasons for TAVR underutilization in Blacks and Hispanics.