Table 1 Preoperative characteristics

Age (years), mean

78.7

79.3

0.93

Male sex, n (%)

22 (73)

21 (70)

0.91

Body surface area (m²), mean

1.79

1.78

0.99

Left ventricular ejection fraction (%), mean

28

29

0.89

EuroSCORE II (%)

9.1

9.5

0.92

Pre-CPB Hct (%), mean ± SD

32.4 ± 1.2

32.6 ± 1.9

0.92

Pre-CPB Hb (g/dL), mean ± SD

11.7 ± 1.1

11.8 ± 1.2

0.94

Chronic obstructive pulmonary disease, n

6

5

0.96

Creatinine (mg/dL), mean ± SD

1.14 ± 0.2

1.13 ± 0.5

0.98

Obstructive coronary artery disease

30

30

1

Peripheral arterial disease

2

3

0.98