1. National trends in utilization and in-hospital outcomes of mechanical versus bioprosthetic aortic valve replacements 
Abby J. Isaacs, MS, Jeffrey Shuhaiber, MD, Arash Salemi, MD, O. Wayne Isom, MD, Art Sedrakyan, MD, PhD 
The Journal of Thoracic and Cardiovascular Surgery 
Volume 149, Issue 5, Pages e3 (May 2015)
DOI: /j.jtcvs
Copyright © 2015 The American Association for Thoracic Surgery Terms and Conditions

2. Figure 1
Estimated national volume of bioprosthetic and mechanical aortic valve replacement procedures, by year, from 1998 to 2011.
The Journal of Thoracic and Cardiovascular Surgery  , e3DOI: ( /j.jtcvs )
Copyright © 2015 The American Association for Thoracic Surgery Terms and Conditions

3. Figure 2
Percentage of aortic valve replacements in which bioprosthetic valves were implanted, by hospital.
The Journal of Thoracic and Cardiovascular Surgery  , e3DOI: ( /j.jtcvs )
Copyright © 2015 The American Association for Thoracic Surgery Terms and Conditions

4. Figure 3
Percentage of aortic valve replacements in which bioprosthetic valves were implanted, over time, by (A) patient age; (B) concomitant CABG; and (C) hospital valve-procedure volume. CI, Confidence interval; Nt, total number of aortic valve replacements in each group in 1998 and 2011; AVR, aortic valve replacement; CABG, coronary artery bypass grafting.
The Journal of Thoracic and Cardiovascular Surgery  , e3DOI: ( /j.jtcvs )
Copyright © 2015 The American Association for Thoracic Surgery Terms and Conditions

5. Percent bioprosthetic aortic valves by (A) age, (B) concomitant CABG, and (C) hospital valve volume.
The Journal of Thoracic and Cardiovascular Surgery  , e3DOI: ( /j.jtcvs )
Copyright © 2015 The American Association for Thoracic Surgery Terms and Conditions