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Table 1 Demographic data

From: Impact of age on early outcome after coronary bypass graft surgery using minimized versus conventional extracorporeal circulation

Variable

CECC

MECC

p-value

(n = 1,137)

(n = 1,137)

Male gender [n; %]

995 (80.4)

995 (80.4)

1.00

Age [years]

67.3 ± 8.8

67.3 ± 8.8

1.00

Age group [n; %]

   

 < 59 (group 1)

240 (19)

240 (19)

1.00

 60 – 69 (group 2)

440 (36)

440 (36)

 70 – 79 (group 3)

485 (39)

485 (39)

 > 80 (group 4)

72 (6)

72 (6)

Logistic EuroSCORE [%, 95% CI)

6.3 (5.8 to 6.6)

5.0 (4.6 to 5.3)

< 0.001

Ejection fraction [%]

60 (47; 70)

63 (50; 70)

< 0.001

Height [cm]

171 ± 8.5

171 ± 8

0.26

Weight [kg]

86 ± 16

82 ± 13

< 0.001

Atrial fibrillation [n; %]

75 (6.1)

44 (3.3)

0.002

COPD [n; %]

107 (8.6)

94 (7.4)

0.24

Active smoker [n; %]

387 (31)

355 (29)

0.35

Preoperative myocardial infarction [n; %]

564 (46)

627 (51)

0.01

Insulin-dependent diabetes mellitus [n; %]

148 (12)

138 (11)

0.57

Diabetic nephropathy [n; %]

52 (4.2)

47 (3.8)

0.68

Serum creatinine [mg × dL−1]

1 (0.8; 1.2)

0.9 (0.8; 1.1)

0.10

Estimated GFR [mL × min−1 × 1,73 m−2]

79 (62; 96)

82 (64; 100)

0.02

Estimated GFR < 60 mL × min−1 × 1,73 m−2 [n; %]

297 (24)

243 (20)

0.01

Indication for surgery [n; %]

  

< 0.001

 Elective

674 (55)

588 (48)

 

 Urgent

368 (30)

496 (40)

 

 Emergency

195 (16)

153 (12)

 

Second cardiac operation [n; %]

91 (7.4)

14 (1.1)

< 0.001