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Figure 2 Scatterplot of the correlation between deceleration time of the diastolic wave of pulmonary venous flow (DT_D) and mean left atrial pressure (P_LA). Data are plotted for group 1 combined with group 2. The horizontal dashed line indicates a DT_D of 175 ms, which predicted a P_LA of >17 mm Hg, with 100% sensitivity and 98% specificity.