NT-proBNP (pg/L)

LVEF (%)

before treatment

After treatment

before treatment

After treatment

Control group (n = 36)

5285.30 ± 1112.10

1602.68 ± 192.46^①

37.90 ± 3.40

43.68 ± 6.42^①

Observe Group A (n = 36)

5052.24 ± 1096.26

1114.55 ± 168.68^①②

38.26 ± 3.15

50.05 ± 6.10^①②

Observe Group B (n = 34)

5106.16 ± 989.66

761.71 ± 141.44^①②③

39.25 ± 3.07

56.94 ± 5.86^①②③