Table 2. Level of Gal-3, FKN, IL-6, miR-21 and cTnI in different NYHA grades.

Markers	Class II	Class III	Class IV	P-value
Gal-3 (μg/L)	18.92 ± 2.21*#	20.98 ± 2.73#	25.01 ± 2.63	0.000
FKN (ng/L)	1187.93 ± 34.92*#	1298.87 ± 35.87#	1428.82 ± 56.29	0.000
IL-6 (ng/L)	13.28 ± 3.29*#	16.98 ± 2.09#	19.63 ± 2.09	0.000
CTnI (μg/L)	0.53 ± 0.09*#	0.65 ± 0.12#	0.79 ± 0.27	0.000
miR-21	6.02 ± 0.27*#	7.68 ± 0.28#	9.03 ± 0.32	0.000

^*Compared with class III; ^#Compared with class IV.