Table 3 NT-proBNP and Tissue Doppler echocardiography variables according to reduction in systolic function, n = 137. (median ± SD, IQR: inter quartile range for NT-proBNP)

NT-proBNP

97.0 (180.5)

587.6 (2914.9)

3373.0 (6057)

< 0.001/< 0.001

septal longitudinal displacement [mm]

11.5 (± 3.2)

9.3 (± 4.3)

4.9 (± 2.0)

0.015/< 0.001

lateral longitudinal displacement [mm]

12.6 (± 2.6)

8.7 (± 3.6)

4.1 (± 3.3)

< 0.001/< 0.001

Strain septal [%]

-21.1 (± 7.5)

-14.8 (± 6.9)

-15.4 (± 7.4)

0.001/0.002

Strain lateral [%]

-19.1 (± 9.3)

-16.1 (± 9.0)

-10.0 (± 5.2)

0.130/< 0.001

TVI S' [m/s] septal

0.09 (± 0.07)

0.06 (± 0.03)

0.04 (± 0.02)

0.002/< 0.001

TVI S' [m/s] lateral

0.06 (± 0.03)

0.05 (± 0.02)

0.03 (± 0.02)

< 0.001/< 0.001

E/E'

9.5 (± 4.1)

12.3 (± 12.0)

19.3 (± 16.6)

0.063/< 0.001