title: Debate on valvular heart disease. Pro: patients with valvular disease should have significant exercise intolerance beofre surgical intervention.
mesh_terms: D001022:Aortic Valve Insufficiency / Q000175:diagnosis; D001024:Aortic Valve Stenosis / Q000175:diagnosis; D005080:Exercise Test; D005500:Follow-Up Studies; D006349:Heart Valve Diseases / Q000175:diagnosis / Q000601:surgery*; D006801:Humans; D008944:Mitral Valve Insufficiency / Q000175:diagnosis; D008946:Mitral Valve Stenosis / Q000175:diagnosis / Q000601:surgery; D011183:Postoperative Complications / Q000401:mortality; D013997:Time Factors