[1] N ishimura RA, Otto CM, Bonow RO, et al. 2017 AHA/ACC focused update of the 2014 AHA/ACC guideline for the management of patients with valvular heart disease: a report of the American College of Cardiology/American Heart Association Task Force on clinical practice guidelines. J Am Coll Cardiol 2017; 70: 252-289. doi:  10.1016/j.jacc.2017.03.011
[2] Oxman TE, Freeman DH Jr, Manheimer ED. Lack of social participation or religious strength and comfort as risk factors for death after cardiac surgery in the elderly. Psychosom Med 1995; 57: 5-15. doi:  10.1097/00006842-199501000-00002
[3] Chiappini B, Camurri N, Loforte A, et al. Outcome after aortic valve replacement in octogenarians. Ann Thorac Surg 2004; 78: 85-89. doi:  10.1016/j.athoracsur.2003.12.060
[4] Arnold SV, Spertus JA, Vemulapalli S, et al. Quality-of-life outcomes after transcatheter aortic valve replacement in an unselected population: a report from the STS/ACC Transcatheter Valve Therapy Registry. JAMA Cardiol 2017; 2: 409-416. doi:  10.1001/jamacardio.2016.5302
[5] Lange R, Beckmann A, Neumann T, et al. Quality of life after transcatheter aortic valve replacement: prospective data from GARY (German Aortic Valve Registry). JACC Cardiovasc Interv 2016; 9: 2541-2554. doi:  10.1016/j.jcin.2016.09.050
[6] Kahn JM, Benson NM, Appleby D, et al. Long-term acute care hospital utilization after critical illness. JAMA 2010; 303: 2253-2259. doi:  10.1001/jama.2010.761
[7] Henry L, Halpin L, Hunt S, et al. Patient disposition and long-term outcomes after valve surgery in octogenarians. Ann Thorac Surg 2012; 94: 744-750. doi:  10.1016/j.athoracsur.2012.04.073
[8] Edgerton JR, Herbert MA, Mahoney C, et al. Long-term fate of patients discharged to extended care facilities after cardiovascular surgery. Ann Thorac Surg 2013; 96: 871-877. doi:  10.1016/j.athoracsur.2013.04.041
[9] Fried LP, Tangen CM, Walston J, et al. Frailty in older adults: evidence for a phenotype. J Gerontol A Biol Sci Med Sci 2001; 56: M146-M156. doi:  10.1093/gerona/56.3.M146
[10] Chauhan D, Haik N, Merlo A, et al. Quantitative increase in frailty is associated with diminished survival after transcatheter aortic valve replacement. Am Heart J 2016; 182: 146-154. doi:  10.1016/j.ahj.2016.06.028
[11] Kappetein AP, Head SJ, Généreux P, et al. Updated standardized endpoint definitions for transcatheter aortic valve implantation: the Valve Academic Research Consortium-2 consensus document (VARC-2). Eur J Cardiothorac Surg 2012; 42: S45-S60. doi:  10.1093/ejcts/ezs533
[12] Edgerton J, Filardo G, Ryan WH, et al. Risk of not being discharged home after isolated coronary artery bypass graft operations. Ann Thorac Surg 2013; 96: 1287-1292. doi:  10.1016/j.athoracsur.2013.05.042
[13] Javadikasgari H, Gillinov AM, Idrees JJ, et al. Valve repair is superior to replacement in most patients with coexisting degenerative mitral valve and coronary artery diseases. Ann Thorac Surg 2017; 103: 1833-1841. doi:  10.1016/j.athoracsur.2016.08.076