Table 2 Operative patients’ characteristics

Elective surgery (%)

69,23

Urgent surgery (%)

30,77

Ejection fraction (% ± SD)

53,1 ± 9,78

Patients with EF < 30% (%)

3,85

Patients with 30% ≤ EF <50% (%)

19,23

Operation risk (Euroscore) (±SD)

3,62 ± 2,43

Patients with low risk of operation (%)

26,92

Patients with intermediate risk of operation (%)

50,0

Patients with high risk of operation (%)

23,08

Number of grafts per patient (±SD)

3,5 ± 0,8

Number of arterial grafts per patient

1,0 ± 0,0

Number of venous grafts per patient

2,5 ± 0,7

Patient with implanted

1 graft (%)

3,85

2 grafts (%)

26,92

3 grafts (%)

50,0

4 or more grafts (%)

19,23

Surgical time (min ± SD)

184,17 ± 51,54

Cross clamping time (min ± SD)

48,12 ± 13,31