1987;8:471 83. 6. Kelly TA, Rothbart RM, Cooper CM, et al. Comparison of outcome of asymptomatic to symptomatic patients older than 20 years of age with valvular aortic stenosis. Am J Cardiol. 1988;61:123 30. 7. Pellikka PA, Nishimura RA, Bailey KR, et al. The natural history of adults with asymptomatic, hemodynamically significant aortic stenosis. J Am Coll Cardiol. 1990;15:1012 7. 8. Dahl JS, Eleid MF, Michelena HI, et al. Effect of left ventricular ejection fraction on postoperative outcome in patients with severe aortic ste- nosis undergoing aortic valve replacement. Circ Cardiovasc Imaging. 2015;8:e002917. 9. Taniguchi T, Morimoto T, Shiomi H, et al. Prognostic impact of left ven- tricular ejection fraction in patients with severe aortic stenosis. JACC Car- diovasc Interv. 2018;11:145 57. 10. Ito S, Miranda WR, Nkomo VT, et al. Reduced left ventricular ejec- tion fraction in patients with aortic stenosis. J Am Coll Cardiol. 2018;71:1313 21. 11. Bohbot Y, de Meester de Ravenstein C, Chadha G, et al. Relationship be- tween left ventricular ejection fraction and mortality in asymptomatic and minimally symptomatic patients with severe aortic stenosis. JACC Cardio- vasc Imaging. 2019;12:38 48. 12. Rosenhek R, Binder T, Porenta G, et al. Predictors of outcome in severe, asymptomatic aortic stenosis. N Engl J Med. 2000;343:611 7. 13. Otto CM, Burwash IG, Legget ME, et al. Prospective study of asymptom- atic valvular aortic stenosis. Clinical, echocardiographic, and exercise pre- dictors of outcome. Circulation. 1997;95:2262 70. 14. Pellikka PA, Sarano ME, Nishimura RA, et al. Outcome of 622 adults with asymptomatic, hemodynamically significant aortic stenosis during pro- longed follow-up. Circulation. 2005;111:3290 5. 15. Lancellotti P, Donal E, Magne J, et al. Risk stratification in asymptomatic moderate to severe aortic stenosis: the importance of the valvular, arterial and ventricular interplay. Heart. 2010;96:1364 71. 16. 