Dynamic organ perfusion techniques tied to less organ rejection after liver transplantation compared to static cold storage
Dynamic organ perfusion techniques are tied to less organ rejection after liver transplantation compared to static cold storage suggests a new study published in the Hepatology
Acute cellular rejection (ACR) is a frequent complication after liver transplantation. By reducing ischemia and graft damage, dynamic preservation techniques may diminish ACR. We performed a systematic review to assess the effect of currently tested organ perfusion (OP) approaches versus static cold storage (SCS) on post-transplant ACR-rates.
Approach and Results:
A systematic search of Medline, Embase, Cochrane Library, and Web of Science was conducted. Studies reporting ACR-rates between OP and SCS and comprising at least 10 liver transplants performed with either hypothermic oxygenated perfusion (HOPE), normothermic machine perfusion, or normothermic regional perfusion were included. Studies with mixed perfusion approaches were excluded. Eight studies were identified (226 patients in OP and 330 in SCS). Six studies were on HOPE, one on normothermic machine perfusion, and one on normothermic regional perfusion. At meta-analysis, OP was associated with a reduction in ACR compared with SCS [OR: 0.55 (95% CI, 0.33–0.91), p=0.02]. This effect remained significant when considering HOPE alone [OR: 0.54 (95% CI, 0.29–1), p=0.05], in a subgroup analysis of studies including only grafts from donation after cardiac death [OR: 0.43 (0.20–0.91) p=0.03], and in HOPE studies with only donation after cardiac death grafts [OR: 0.37 (0.14–1), p=0.05].
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