title: Low-gradient "severe" aortic stenosis with normal systolic function: time to refine the guidelines?
authors.forename: William A
authors.initials: WA
authors.lastname: Zoghbi
mesh_terms: D001024:Aortic Valve Stenosis / Q000175:diagnosis* / Q000401:mortality / Q000503:physiopathology*; D017408:Guidelines as Topic; D006801:Humans; D053208:Kaplan-Meier Estimate; D011379:Prognosis; D012720:Severity of Illness Index; D013318:Stroke Volume / Q000502:physiology; D013599:Systole / Q000502:physiology*; D016277:Ventricular Function, Left / Q000502:physiology