Fig. 2

ROC curve analyses of echocardiographic diastolic parameters for NT-proBNP ≥500 ng/L. DT;deceleration time, E; early diastolic transmitral flow velocity, e′; early diastolic mitral annuler velocity, LA; left atrium, PAP; pulmonary artery pressure,, PV SFF; pulmonary veins systolic filling fraction, ROC; receiver operating characteristic