1. Murphy ES, Lawson RM, Starr A and Rahimtoola SH. Severe aortic stenosis in patients 60 years of age or older: left ventricular function and 10-year survival after valve replacement. Circulation. 1981; 64: Ii184–8. PMID: 7249320
2. Schwarz F, Baumann P, Manthey J, Hoffmann M, Schuler G, Mehmel HC, et al. The effect of aortic valve replacement on survival. Circulation. 1982; 66:1105–10. https://doi.org/10.1161/01.cir.66.5.1105 PMID: 7127696
3. Brennan JM, Edwards FH, Zhao Y, O’Brien SM, Douglas PS and Peterson ED. Long-term survival after aortic valve replacement among high-risk elderly patients in the United States: insights from the Society of Thoracic Surgeons Adult Cardiac Surgery Database, 1991 to 2007. Circulation. 2012; 126:1621–9. https://doi.org/10.1161/CIRCULATIONAHA.112.091371 PMID: 22907936
4. Nishimura RA, Otto CM, Bonow RO, Carabello BA, Erwin JP, 3rd, Guyton RA, et al. 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 Practice Guidelines. Journal of the American College of Cardiology. 2014; 63:e57–185. https://doi.org/10.1016/j.jacc.2014.02.536 PMID:24603191
5. Baumgartner H, Falk V, Bax JJ, De Bonis M, Hamm C, Holm PJ, et al. 2017 ESC/EACTS Guidelines for the management of valvular heart disease. Eur Heart J.2017; 38:2739–2791 https://doi.org/10.1093/eurheartj/ehx391 PMID: 28886619
6. Nishimura RA, Otto CM, Bonow RO, Carabello BA, Erwin JP 3rd, Fleisher LA, 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. https://doi.org/10.1016/j.jacc.2017.03.011 PMID: 28315732
7. Bouma BJ, van Den Brink RB, van Der Meulen JH, Verheul HA, Cheriex EC, Hamer HP, et al. To operate or not on elderly patients with aortic stenosis: the decision and its consequences. Heart. 1999; 82:143–8. https://doi.org/10.1136/hrt.82.2.143 PMID: 10409526
8. Iung B, Cachier A, Baron G, Messika-Zeitoun D, Delahaye F, Tornos P, et al. Decision-making in elderly patients with severe aortic stenosis: why are so many denied surgery? Eur Heart J. 2005; 26:2714–20. https://doi.org/10.1093/eurheartj/ehi471 PMID: 16141261
9. Bach DS, Siao D, Girard SE, Duvernoy C, McCallister BD Jr. and Gualano SK. Evaluation of patients with severe symptomatic aortic stenosis who do not undergo aortic valve replacement: the potential role of subjectively overestimated operative risk. Circ Cardiovasc Qual Outcomes. 2009; 2:533–9. https://doi.org/10.1161/CIRCOUTCOMES.109.848259 PMID: 20031890
10. Smith CR, Leon MB, Mack MJ, Miller DC, Moses JW, Svensson LG, et al. Transcatheter versus surgical aortic-valve replacement in high-risk patients. N Engl J Med. 2011; 364:2187–98. https://doi.org/10.1056/NEJMoa1103510 PMID: 21639811 TAVI versus conservative management for severe AS PLOS ONE | https://doi.org/10.1371/journal.pone.0222979 September 26, 2019 15 / 17
11. Kodali SK, Williams MR, Smith CR, Svensson LG, Webb JG, Makkar RR, et al. Two-year outcomes after transcatheter or surgical aortic-valve replacement. N Engl J Med. 2012; 366:1686–95. https://doi.org/10.1056/NEJMoa1200384 PMID: 22443479
12. Mack MJ, Leon MB, Smith CR, Miller DC, Moses JW, Tuzcu EM, et al. 5-year outcomes of transcatheter aortic valve replacement or surgical aortic valve replacement for high surgical risk patients with aortic stenosis (PARTNER 1): a randomised controlled trial. Lancet. 2015; 385:2477–84. https://doi.org/10.1016/S0140-6736(15)60308-7 PMID: 25788234
13. Leon MB, Smith CR, Mack MJ, Makkar RR, Svensson LG, Kodali SK, et al. Transcatheter or Surgical Aortic-Valve Replacement in Intermediate-Risk Patients. N Engl J Med. 2016; 374:1609–20. https://doi.org/10.1056/NEJMoa1514616 PMID: 27040324
14. Thourani VH, Kodali S, Makkar RR, Herrmann HC, Williams M, Babaliaros V, et al. Transcatheter aortic valve replacement versus surgical valve replacement in intermediate-risk patients: a propensity score analysis. Lancet. 2016; 387:2218–25. https://doi.org/10.1016/S0140-6736(16)30073-3 PMID:27053442
15. Leon MB, Smith CR, Mack M, Miller DC, Moses JW, Svensson LG, et al. Transcatheter aortic-valve implantation for aortic stenosis in patients who cannot undergo surgery. N Engl J Med. 2010; 363:1597–607. https://doi.org/10.1056/NEJMoa1008232 PMID: 20961243
16. Makkar RR, Fontana GP, Jilaihawi H, Kapadia S, Pichard AD, Douglas PS, et al. Transcatheter aorticvalve replacement for inoperable severe aortic stenosis. N Engl J Med. 2012; 366:1696–704. https:// doi.org/10.1056/NEJMoa1202277 PMID: 22443478
17. Kapadia SR, Tuzcu EM, Makkar RR, Svensson LG, Agarwal S, Kodali S, et al. Long-term outcomes of inoperable patients with aortic stenosis randomly assigned to transcatheter aortic valve replacement or standard therapy. Circulation. 2014; 130:1483–92. https://doi.org/10.1161/CIRCULATIONAHA.114.009834 PMID: 25205802
18. Kapadia SR, Leon MB, Makkar RR, Tuzcu EM, Svensson LG, Kodali S, et al. 5-year outcomes of transcatheter aortic valve replacement compared with standard treatment for patients with inoperable aortic stenosis (PARTNER 1): a randomised controlled trial. Lancet. 2015; 385:2485–91. https://doi.org/10.1016/S0140-6736(15)60290-2 PMID: 25788231
19. Osnabrugge RL, Mylotte D, Head SJ, Van Mieghem NM, Nkomo VT, LeReun CM, et al. Aortic stenosis in the elderly: disease prevalence and number of candidates for transcatheter aortic valve replacement: a meta-analysis and modeling study. J Am Coll Cardiol. 2013; 62:1002–12. https://doi.org/10.1016/j.jacc.2013.05.015 PMID: 23727214
20. Takimoto S, Saito N, Minakata K, Shirai S, Isotani A, Arai Y, et al. Favorable Clinical Outcomes of Transcatheter Aortic Valve Implantation in Japanese Patients- First Report From the Post-Approval KTAVI Registry. Circ J. 2016; 81:103–109. https://doi.org/10.1253/circj.CJ-16-0546 PMID: 27916776
21. Taniguchi T, Morimoto T, Shiomi H, Ando K, Kanamori N, Murata K, et al. Initial Surgical Versus Conservative Strategies in Patients With Asymptomatic Severe Aortic Stenosis. J Am Coll Cardiol. 2015;66:2827–2838. https://doi.org/10.1016/j.jacc.2015.10.001 PMID: 26477634
22. Kappetein AP, Head SJ, Genereux P, Piazza N, van Mieghem NM, Blackstone EH, 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:S45–60. https://doi.org/10.1093/ejcts/ezs533 PMID: 23026738
23. Austin PC. Balance diagnostics for comparing the distribution of baseline covariates between treatment groups in propensity-score matched samples. Stat Med. 2009; 28:3083–107. https://doi.org/10.1002/sim.3697 PMID: 19757444
24. Gilard M, Eltchaninoff H, Iung B, Donzeau-Gouge P, Chevreul K, Fajadet J, et al. Registry of transcatheter aortic-valve implantation in high-risk patients. The New England journal of medicine. 2012; 366 (18):1705–15. https://doi.org/10.1056/NEJMoa1114705 PMID: 22551129
25. Ludman PF, Moat N, de Belder MA, Blackman DJ, Duncan A, Banya W, et al. Transcatheter aortic valve implantation in the United Kingdom: temporal trends, predictors of outcome, and 6-year follow-up: a report from the UK Transcatheter Aortic Valve Implantation (TAVI) Registry, 2007 to 2012. Circulation. 2015; 131(13):1181–90. https://doi.org/10.1161/CIRCULATIONAHA.114.013947 PMID: 25637628
26. Krasopoulos G, Falconieri F, Benedetto U, Newton J, Sayeed R, Kharbanda R, et al. European real world trans-catheter aortic valve implantation: systematic review and meta-analysis of European national registries. Journal of cardiothoracic surgery. 2016; 11(1):159. https://doi.org/10.1186/s13019-016-0552-6 PMID: 27899128
27. Auffret V, Lefevre T, Van Belle E, Eltchaninoff H, Iung B, Koning R, et al. Temporal Trends in Transcatheter Aortic Valve Replacement in France: FRANCE 2 to FRANCE TAVI. Journal of the American College of Cardiology. 2017; 70(1):42–55. https://doi.org/10.1016/j.jacc.2017.04.053 PMID: 28662806 TAVI versus conservative management for severe AS PLOS ONE | https://doi.org/10.1371/journal.pone.0222979 September 26, 2019 16 / 17
28. Reynolds MR, Magnuson EA, Wang K, Thourani VH, Williams M, Zajarias A, et al. Health-related quality of life after transcatheter or surgical aortic valve replacement in high-risk patients with severe aortic stenosis: results from the PARTNER (Placement of AoRTic TraNscathetER Valve) Trial (Cohort A). J Am Coll Cardiol. 2012; 60:548–58. https://doi.org/10.1016/j.jacc.2012.03.075 PMID: 22818074
29. Krane M, Deutsch MA, Piazza N, Muhtarova T, Elhmidi Y, Mazzitelli D, et al. One-year results of healthrelated quality of life among patients undergoing transcatheter aortic valve implantation. Am J Cardiol. 2012; 109:1774–81. https://doi.org/10.1016/j.amjcard.2012.02.021 PMID: 22520622
30. Astin F, Horrocks J, McLenachan J, Blackman DJ, Stephenson J and Closs SJ. The impact of transcatheter aortic valve implantation on quality of life: A mixed methods study. Heart Lung. 2017; 46:432– 438. https://doi.org/10.1016/j.hrtlng.2017.08.005 PMID: 28985898
31. Baron SJ, Arnold SV, Reynolds MR, Wang K, Deeb M, Reardon MJ, et al. Durability of quality of life benefits of transcatheter aortic valve replacement: Long-term results from the CoreValve US extreme risk trial. Am Heart J. 2017; 194:39–48. https://doi.org/10.1016/j.ahj.2017.08.006 PMID: 29223434
32. Herrmann HC, Thourani VH, Kodali SK, Makkar RR, Szeto WY, Anwaruddin S, et al. One-Year Clinical Outcomes With SAPIEN 3 Transcatheter Aortic Valve Replacement in High-Risk and Inoperable Patients With Severe Aortic Stenosis. Circulation. 2016; 134:130–40. https://doi.org/10.1161/CIRCULATIONAHA.116.022797 PMID: 27400898