title: Phonoechographic findings in disc variance of a Beall mitral prosthesis.
mesh_terms: D000328:Adult; D004452:Echocardiography; D004868:Equipment Failure; D005260:Female; D006350:Heart Valve Prosthesis / Q000009:adverse effects*; D006801:Humans; D008943:Mitral Valve / Q000503:physiopathology / Q000601:surgery; D008944:Mitral Valve Insufficiency / Q000175:diagnosis* / Q000209:etiology; D010701:Phonocardiography