title: [Apexcardiogram indexes and its 1st derivative evaluating myocardial contractility: normal values].
mesh_terms: D000293:Adolescent; D000328:Adult; D002648:Child; D002675:Child, Preschool; D005260:Female; D006352:Heart Ventricles / Q000503:physiopathology; D006801:Humans; D007702:Kinetocardiography; D008297:Male; D008875:Middle Aged; D009200:Myocardial Contraction; D012016:Reference Values
vernacular_title: Indices derivados del apexcardiograma y su primera derivada que valoran contractilidad miocardica: valores normales.