Table 1 Demographical and clinical characteristics of the patients

Number of patients

1191 (100)

861 (72.3)

330 (27.7)

–

Demographics

Age (year), median (min–max)

63 (16–87)

61 (16–83)

69 (29–87)

< 0.001

Male gender, n (%)

691 (58.0%)

501 (58.1)

190 (56.8)

0.94

Comorbidities n (%)

Diabetes

272 (22.8%)

177 (20.6)

95 (28.8)

0.002

Hypertension

652 (54.7%)

440 (51.1)

212 (64.2)

< 0.001

Chronic renal failure

152 (12.8%)

93 (10.8)

59 (17.9)

< 0.001

COPD

182 (15.3%)

113 (13.1)

69 (20.9)

< 0.001

Liver failure

24 (2.0%)

10 (1.2)

14 (4.2)

< 0.001

Cerebrovascular disease

47 (3.9%)

27 (3.1)

20 (6.1)

0.02

Peripheral artery disease

135 (11.3%)

89 (10.3)

46 (13.9)

0.08

Previous cardiac surgery

59 (5.0%)

31 (3.6)

28 (8.5)

< 0.001

Perioperative factors

EF (%), median (min–max)

60 (30–65)

60 (30–60)

55 (36–65)

 < 0.001

Type of operation, n (%)

 Isolated CABG

599 (50.3%)

477 (55.4)

122 (37.0)

< 0.001

 Isolated valvular intervention

374 (31.4%)

241 (28.0)

133 (40.3)

< 0.001

 CABG plus valvular intervention

150 (12.6%)

82 (9.5)

68 (20.6)

< 0.001

 Other

68 (5.7%)

61 (7.1)

7 (2.1)

< 0.001

CPB time (min), median (min–max)

138 (49–319)

136 (49–319)

143 (58–270)

< 0.001

CC time (min), median (min–max)

70 (19–245)

69 (22–245)

75 (19–165)

< 0.001