title: [Echocardiographic calculation of left ventricle ejection volume. 1) Preliminary note: comparison  of diverse formula].
abstract: Four different formulae to calculate left ventricular ejection volume were examined in the present study. Formulae show a different degree of reliability and, however, their use prove to be limited if heart rate factor is not considered. These results emphasized the great importance of determining left ventricular ejection volume in terms of cardiac output.
mesh_terms: D000293:Adolescent; D000328:Adult; D002648:Child; D004452:Echocardiography / Q000379:methods*; D006339:Heart Rate; D006801:Humans; D008433:Mathematics; D016276:Ventricular Function
vernacular_title: Calcolo ecocardiografico del volume di eiezione ventricolare sinistro. 1) Nota preliminare: confronto fra diverse formule.