- Chesterfield, MODate of first commercial TAVR procedure performed*:Apr, 2015TAVR Total Commercial VolumeCumulative volume since program inception:678Average annual volume for reporting period:12530-Day Risk Adjusted TAVR Composite 1,2,3Reporting Period:October 1, 2020 through September 30, 2023Eligible procedures in reporting period:329TAVR 30 Day Composite Score**:0.02( 0.00 , 0.04)0.02% (0, 0.04)Site ScoreSite Credible IntervalTVT RangeTVT Average ScoreTAVR 30-Day Composite Rating**