6. Thourani VH, O Brien SM, Kelly JJ, et al. Development and application of a risk prediction model for in-hospital stroke after transcatheter aortic valve replacement: a report from the Society of Thoracic Surgeons/American College of Cardiology Transcatheter Valve Therapy Registry. Ann Thorac Surg. 2019;107:1097 103. 7. Lytwyn J, Stammers AN, Kehler DS, et al. The impact of frailty on func- tional survival in patients 1 year after cardiac surgery. J Thorac Cardiovasc Surg. 2017;154:1990 9. 8. Afilalo J, Alexander KP, Mack MJ, et al. Frailty assessment in the cardiovas- cular care of older adults. J Am Coll Cardiol. 2014;63:747 62. 9. Schoenenberger AW, Moser A, Bertschi D, et al. Improvement of risk pre- diction after transcatheter aortic valve replacement by combining frailty with conventional risk scores. JACC Cardiovasc Interv. 2018;11:395 403. 10. Afilalo J, Lauck S, Kim DH, et al. Frailty in older adults undergoing aortic valve replacement: the FRAILTY-AVR study. J Am Coll Cardiol. 2017;70:689 700. 11. Arnold SV, O Brien SM, Vemulapalli S, et al. Inclusion of functional status mea- sures in the risk adjustment of 30-day mortality after transcatheter aortic valve replacement: a report from the Society of Thoracic Surgeons/American College of Cardiology TVT Registry. JACC Cardiovasc Interv. 2018;11:581 9. 12. Arnold SV, Reynolds MR, Lei Y, et al. Predictors of poor outcomes after transcatheter aortic valve replacement: results from the PARTNER (Place- ment of Aortic Transcatheter Valve) trial. Circulation. 2014;129:2682 90. 13. Makkar RR, Fontana GP, Jilaihawi H, et al. Transcatheter aortic-valve replacement for inoperable severe aortic stenosis. N Engl J Med. 2012;366:1696 704. 14. Suri RM, Gulack BC, Brennan JM, et al. Outcomes of patients with severe chronic lung disease who are undergoing transcatheter aortic valve re- placement. Ann Thorac Surg. 2015;100:2136 45. 15. Thourani VH, Forcillo J, Beohar N, et al. 