Fig. 2

All of the echocardiographic parameters used to assess the LA size were plotted against AoR. Shown are the Pearson correlation coefficients (r values). The color code was generated to evaluate the degree of correlation (white to red = 0 to 1; white to blue = 0 to −1). LAL (A4C) and LAL (A2C) indicate the LA length from apical 4 and apical 2 chambers, respectively; LAD (A4C +A2C)/2 indicates the average of LA diameter assessed in apical 4 and apical 2 chambers; LAD (A4C) and LAD (A2C) indicate the LA diameter assessed in apical 4 and apical 2 chambers, respectively; LAD P-A/LAV (%) indicates the ratio of LAD P-A to LAV