[Assessing the changes in cardiac function in aging procession with echocardiography].
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D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000375:Aging / Q000502:physiology*; D004452:Echocardiography; D015150:Echocardiography, Doppler; D005260:Female; D006321:Heart / Q000502:physiology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D012016:Reference Values; D016277:Ventricular Function, Left / Q000502:physiology