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Table 1 Baseline characteristics of patients undergoing coronary artery bypass graft, valve surgery, or combined cardiac surgery

From: Determination of the threshold of cardiac troponin I associated with an adverse postoperative outcome after cardiac surgery: a comparative study between coronary artery bypass graft, valve surgery, and combined cardiac surgery

Characteristic

Coronary artery bypass graft (n = 225)

Valve surgery (n = 225)

Combined surgery (n = 225)

Age (years)

73 ± 8

73 ± 8

73 ± 8

Men

145 (64)

145 (64)

145 (64)

Women

80 (36)

80 (36)

80 (36)

Body mass index (kg/m2)

27.0 ± 3.9

26.8 ± 4.0

26.4 ± 4.0

Euroscore

5 (4–5)

5 (5-5)

7 (6–7)*

Diabetes mellitus

45 (20)

24 (11)*

44 (20)

Chronic obstructive pulmonary disease

21 (9)

33 (15)

13 (6)

Hypertension

169 (75)

134 (60)*

145 (64)*

Stroke

19 (8)

5 (2)*

10 (4)*

Left ventricular ejection fraction (%)

65 ± 12

65 ± 10

64 ± 13

Serum creatinine (μmol/l)

100 ± 42

97 ± 19

100 ± 40

Creatinine clearance (ml/min)

61 ± 20

62 ± 20

60 ± 21

Preoperative medication

   

   Nitrates

166 (52)

54 (24)*

66 (29)*

   Calcium blockers

76 (34)

35 (16)*

56 (25)*

   β-blockers

144 (64)

44 (20)*

83 (37)*

   Renin – angiotensin system inhibitors

102 (45)

93 (41)

66 (29)*

   Diuretics

31 (14)

93 (41)*

114 (51)*

Surgery

   

   Cardiopulmonary bypass time (min)

90 ± 22

99 ± 20*

138 ± 27*

   Aortic cross-clamping time (min)

46 ± 13

68 ± 13*

96 ± 19*

  1. Data expressed as the mean ± standard deviation, the number (%), or the median (95% confidence interval). *P < 0.05 versus coronary artery bypass graft; P < 0.05 versus valve surgery. No statistical analysis was performed on age and sex, which were matching variables between groups.