Table 2: Surgical characteristics of patients (n = 184).
| N | % | Mean ± Std. Dev | Range | |
| Total | 184 | 73.3 | - | |
| Emergency | ||||
| Urgent | 1 | 0.5 | - | |
| Elective | 183 | 99.5 | - | |
| Redo | 8 | 4.4 | - | |
| Valve size implanted | ||||
| n19 | 3 | 1.6 | - | |
| n21 | 17 | 9.2 | - | |
| n23 | 45 | 24.5 | - | |
| n25 | 41 | 22.3 | - | |
| n27 | 37 | 20.1 | - | |
| n29 | 41 | 22.3 | - | |
| Associated surgical proceduresa | ||||
| CABG | 49 | 26.6 | - | |
| Ascending aorta vasc. prosthesis | 10 | 5.4 | - | |
| Mitral valve | 24 | 13.0 | - | |
| ECC time [min] | 184 | 120.2 ± 23.8 | 80-202 | |
| Patients with concomitant procedures | 76 | 41.3 | 138.3 ± 20.8 | 101-202 |
| Patients without concomitant procedures | 108 | 58.7 | 107.5 ± 16.4 | 80-167 |
| Aortic cross-clamp time [min] | 184 | 89.3 ± 16.4 | 61-158 | |
| Patients with concomitant procedures | 76 | 41.3 | 91.2 ± 18.7 | 61-158 |
| Patients without concomitant procedures | 108 | 58.7 | 88.0 ± 14.4 | 62-146 |
CABG: Coronary artery bypass graft; ECC: Extracorporeal circulation.