title: [Changes in the 1st heart sound in incipient heart failure].
mesh_terms: D000328:Adult; D003327:Coronary Disease / Q000175:diagnosis*; D005260:Female; D006326:Heart Auscultation; D006331:Heart Diseases / Q000175:diagnosis* / Q000209:etiology; D006347:Heart Sounds; D006801:Humans; D008297:Male; D008875:Middle Aged
vernacular_title: Zmeny I. ozvy pri pocínajúcej srdcovej nedostatocnosti.