Cardiac surgery in the elderly.
D000367:Age Factors; D000368:Aged; D001026:Coronary Artery Bypass / Q000401:mortality; D003327:Coronary Disease / Q000601:surgery*; D005260:Female; D006349:Heart Valve Diseases / Q000601:surgery*; D006350:Heart Valve Prosthesis / Q000401:mortality; D006801:Humans; D008297:Male; D012306:Risk