- Chesterfield, MODate of first commercial TAVR procedure performed*:Apr, 2015TAVR Total Commercial VolumeCumulative volume since program inception:553Average annual volume for reporting period:10330-Day Risk Adjusted TAVR Composite 1,2,3Reporting Period:October 1, 2019 through September 30, 2022Eligible procedures in reporting period:302TAVR 30 Day Composite Score**:0.03(0.00, 0.05)0.03% (0, 0.05)Site ScoreSite Credible IntervalTVT RangeTVT Average ScoreTAVR 30-Day Composite Rating**