Prosthetic valve follow-up: mechanical prosthesis.
D001021:Aortic Valve / Q000601:surgery; D005500:Follow-Up Studies; D006349:Heart Valve Diseases / Q000601:surgery*; D006350:Heart Valve Prosthesis / Q000009:adverse effects / Q000401:mortality; D006801:Humans; D008943:Mitral Valve / Q000601:surgery; D013923:Thromboembolism / Q000209:etiology