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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