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Table 3 Baseline characteristics according to preoperative B-type natriuretic peptide

From: Hemoglobin and B-type natriuretic peptide preoperative values but not inflammatory markers, are associated with postoperative morbidity in cardiac surgery: a prospective cohort analytic study

B-type natriuretic peptide

Quintile 1 (0 - 25.2) (n = 111)

Quintile 2 (25.3 – 53.6 ) (n =111)

Quintile 3 (53.7 – 108.3) (n =111)

Quintile 4 (109.2 – 240.4) (n = 111)

Quintile 5 (258 - 4000) (n = 110)

Trend test

Mean age (SD)

59.0 (9.7)

57.5 (11.4)

60.8 (12.1)

61.2 (11.3)

61.5 (11.0)

P=0.001

Males (%)

78.3

76.5

71.1

68.4

74.5

P = 0.23

Residents in a city with an altitude of 2000- 3000 m (%)

85.6

81.0

80.1

81.0

82.7

P = 0.64

Mean ejection fraction (%)

54.0 (9.2)

53.8 (11.3)

54.2 (11.1)

51.2 (11.0)

45.1 (12.7)

P = 0.001

Diabetes mellitus (%)

23.4

18.9

15.3

17.1

25.4

P = 0.86

Acute coronary syndrome ≤ 30 days (%)

14.4

35.1

31.5

42.3

47.2

P = 0.001

Obesity (%)

25.2

16.2

19.8

17.1

10.9

P = 0.02

Previous cardiac surgery (%)

5.4

6.3

8.1

5.4

7.2

P = 0.7

Proportion of patients undergoing CABG (%)

72.9

79.2

68.4

71.1

57.2

P = 0.001