Echocardiographic measurements of left ventricle in normal infants and children.
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AKIBA, T., YOSHIKAWA, M., OTAKI, S., KOBAYASHI, Y., NAKASATO, M., SUZUKI, H. and SATO, T. <i>Echocardiographic Measurements of Left Ventricle in Normal</i> <i>Infants and Children</i>. Tohoku J. exp. Med., 1986, <b>149</b> (1), 31-37-Echocardiographic studies were performed on 110 normal infants and children ranging in age from 2 days to 15 years. The following parameters of the left ventricle were measured: left ventricular end-diastolic and end-systolic diameters (LVEDd and LVESd), shortening fraction (LVSF), end-diastolic volume (LVEDV), ejection fraction (LVEF), posterior wall thickness in end-diastole (LVPWED) and end-systole (LVPWES), mass (LVM), LVEDd/LVPWED, LVESd/LVPWES and mean velocity of circumferential fiber shortening (LV mean Vcf). Each parameter was compared with body surface area (BSA). LVEDd, LVESd, LVEDV, LVPWED, LVPWES and LVM were expressed as a function of body surface area with exponential equations: LVEDd=41.4 (BSA)<sup>0.49</sup>mm, LVESd=28.1 (BSA)<sup>0.49</sup>mm, LVEDV=74.1 (BSA)<sup>1.48</sup>ml, LVPWED=4.4 (BSA)<sup>0.45</sup>mm, LVPWES=9.2 (BSA)<sup>0.44</sup>mm and LVM=46.4 (BSA)<sup>1.48</sup>g. LVSF, LVEDd/ LVPWED, LVESd/LVPWES and LV mean Vcf were independent of body surface area: LVSF averaged 32±1 (mean±standard error of the mean)%, LVEF 68±1%, LVEDd/LVPWED 10.0±0.2, LVESd/LVPWES 3.1±0.1 and LV mean Vcf 1.08±0.02circ/sec. Thus, normal values of these parameters can be applied to estimate them in pediatric patients with heart diseases.
- The Tohoku Journal of Experimental Medicine
The Tohoku Journal of Experimental Medicine 149(1), 31-37, 1986
Tohoku University Medical Press