Biological n = 159 Mechanical n = 436
p-value
EuroSCORE II 1.9 + 1.4 1.6 + 1.3 0.54
CPB time (min + SD) 85.9 + 23.3 89.6 + 32.2 0.18
Aortic cross-clamp time (min + SD) 61.6 + 18.4 62.4 + 24.2 0.16
Ejection fraction (% + SD) 58.9 + 13.4 58.5 + 12.2 0.42
ICU time (days + SD) 3.5 + 2.9 3.1 + 2.5 0.12