Upper limit of normothermic machine preservation of liver grafts from donation after circulatory death yet to be defined

Table 3 Univariate analysis of recipients and normothermia machine perfusion pump parameters

Recipient and graft descriptors	Beta coefficient	P value
Age (years)	0.012	0.931
Transplant model for end-stage liver disease	0.086	0.627
Time on pump (minutes)	0.005	0.217
Cold ischemia time (minutes)	0.013	0.658
Warm ischemia time (minutes)	-0.036	0.412
< 8 hours	-2.6	0.362
Late group	-1.1	0.667
Machine perfusion time groups
< 8 hours	Reference
8-16 hours	2.1	0.488
16-24 hours	4.1	0.279