No difference on PaO2 after EVLP ( SG = 49837.53 mmHg ; APS = 52155.43 mmHg , p = 0.348 , nor on histological analyses : pulmonary injury score : SG = 4.381.51 ; APS = 4.501.77 , p = 0.881 ; apoptotic cells count after perfusion : SG = 2.4 2.0 cells/mm2 ; APS = 4.8 6.9 cells/mm2 ; p = 0.361 ) .