title: Alternation of the mitral opening click time in a patient with the Beall mitral valve prosthesis.
mesh_terms: D001024:Aortic Valve Stenosis / Q000601:surgery*; D004562:Electrocardiography; D006326:Heart Auscultation; D006350:Heart Valve Prosthesis / Q000009:adverse effects*; D006801:Humans; D008297:Male; D008875:Middle Aged; D008946:Mitral Valve Stenosis / Q000601:surgery*; D010701:Phonocardiography; D011183:Postoperative Complications / Q000209:etiology