Determinants and Regression Equations for the Calculation of Scores of Left Ventricular Tissue Doppler Longitudinal Indexes in a Healthy Italian Pediatric Population

Figure 2

Scatterplot of peak systolic left ventricular longitudinal velocity () versus age. In this figure and in the successive ones, the solid line represents the estimated regression equation (indicated as ). The other lines represent the ±1, ±2, and ±1 values above and below the regression curve.