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)

	LVEF > 55%	LVEF 30–54%	LVEF < 30%	p vs normal
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