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Table 2 Peri- and postoperative data
| Variable | CECC (n = 1,137) [group A] | MECC (n = 1,137) [group B] | p-value |
|---|---|---|---|
| No of grafts [n] | 3 (2; 3) Range (1 – 6) | 3 (2; 4) Range (1 – 6) | 0.004 |
| Use of LIMA [n; %] | 1061 (86) | 1150 (93) | < 0.001 |
| Bypass time [min] | 93 (75; 116) | 78 (60; 97) | < 0.001 |
| Aortic cross clamp time [min] | 53 (44; 66) | 47 (35; 60) | < 0.001 |
| Drainage-loss [mL] | 550 (350; 800) | 550 (370; 850) | 0.33 |
| Resternotomy [n; %] | 67 (5.4) | 69 (5.6) | 0.93 |
| Mechanical ventilation [hours] | 12 (9; 16) | 11 (8; 15) | 0.34 |
| Serum creatinine postoperative [mL × min−1 × 1,73 m−2] | 1 (0.9; 1.3) | 0.9 (0.8; 1.2) | < 0.001 |
| Serum creatinine at discharge [mL × min−1 × 1,73 m−2] | 1.1 (0.9; 1.4) | 1 (0.9; 1.3) | < 0.001 |
| Postoperative dialysis [n; %] | 49 (4.0) | 27 (2.2) | 0.01 |
| < 59 (group 1) | 6 (2.5) | 2 (0.8) | 0.29 |
| 60 – 69 (group 2) | 17 (3.9) | 8 (1.8) | 0.10 |
| 70 – 79 (group 3) | 20 (4.1) | 12 (2.5) | 0.21 |
| > 80 (group 4) | 6 (8.3) | 5 (6.9) | 1.0 |
| Low cardiac output syndrome [n; %] | 37 (3) | 15 (1.2) | 0.003 |
| Central neurologic event [n; %] | 26 (2.1) | 16 (1.3) | 0.16 |
| Respiratory insufficiency [n; %] | 122 (9.9) | 82 (6.6) | 0.004 |
| Reintubation [n; %] | 36 (2.9) | 30 (2.4) | 0.53 |
| Pneumonia [n; %] | 64 (5.2) | 42 (3.4) | 0.04 |
| ICU-stay [days] | 1 (1; 3) | 1 (1; 2) | < 0.001 |
| Hospitalization [days] | 11 (9; 14) | 11 (9; 13) | 0.22 |
| In-hospital mortality [n; %] | 51 (4.1) | 21 (1.7) | < 0.001 |
| 30-day mortality [n; %] | 56 (4.5) | 27 (2.2) | 0.002 |
| ≤ 59 (group 1) | 8 (3.3) | 2 (0.8) | 0.11 |
| 60 – 69 (group 2) | 22 (4.5) | 8 (1.8) | 0.03 |
| 70 – 79 (group 3) | 20 (4.1) | 13 (2.6) | 0.29 |
| ≥ 80 (group 4) | 8 (11.1) | 4 (5.6) | 0.37 |
