Figure 1. Distribution of patients according to the conventional 2D-echocardiography, ECG and diastolic function and prevalence of pathologic levels of BNP (% of patients).

Echo =  conventional 2D-echocardiography; ECG =  electrocardiogram; DF =  diastolic function (assessed by echocardiography); BNP =  Brain natriuretic peptide. Normal echo means normality in LV dimensions and LV global and regional systolic function assessed with conventional 2D echocardiography.