Fig. 2
Heatmap illustrating the relationships between echocardiographic parameters. The color of each cell corresponds to the magnitude and direction of the correlation coefficient, with blue indicating a positive correlation and red indicating a negative correlation. The numerical values within the cells represent the two-way correlation coefficient. NT-proBNP, N-terminal pro–B-type natriuretic peptide; LAVI, left atrial volume index; LVMI, left ventricular mass index; LV EF, left ventricular ejection fraction; E/A, ratio of early to late diastolic filling velocities; e’ lateral, lateral early diastolic mitral annular velocity; e’ septal, septal early diastolic mitral annular velocity; E/e’ ratio, average ratio of early diastolic mitral inflow velocity to early diastolic mitral annular velocity; TRV, maximum tricuspid regurgitant velocity; LV GLS, left ventricular global longitudinal strain; LASr, left atrial reservoir strain; LAScd, left atrial conduit strain; LASct, left atrial contractile strain; LACI, left atrioventricular coupling index.
