title: Asymptomatic patients with significant aortic or mitral incompetence and left ventricular dysfunction should undergo operation.
mesh_terms: D001022:Aortic Valve Insufficiency / Q000175:diagnosis / Q000601:surgery*; D006350:Heart Valve Prosthesis; D006439:Hemodynamics; D006801:Humans; D008944:Mitral Valve Insufficiency / Q000175:diagnosis / Q000601:surgery*; D009200:Myocardial Contraction; D011183:Postoperative Complications / Q000401:mortality; D011379:Prognosis; D012306:Risk