The influence of advanced age on the results of open heart surgery.
D000367:Age Factors; D000368:Aged; D001021:Aortic Valve; D006348:Cardiac Surgical Procedures / Q000401:mortality*; D006331:Heart Diseases / Q000401:mortality / Q000601:surgery; D006350:Heart Valve Prosthesis / Q000401:mortality; D006801:Humans; D008875:Middle Aged; D008943:Mitral Valve