[Clinical studies on diagnosis of malfunctioning prosthetic valves by real time sound spectral analysis (author's transl)].
D006349:Heart Valve Diseases / Q000175:diagnosis / Q000601:surgery; D006350:Heart Valve Prosthesis; D006801:Humans; D010701:Phonocardiography; D011183:Postoperative Complications / Q000175:diagnosis*