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.