Apart from higher postoperative costs, renal failure and subsequent need for RRT is associated with increased mortality in ICU patients in general [29] and in particular in liver transplant recipients, varying from 27% to 67% depending on the comorbidities [30] [31] [32] [33] . There is strong evidence that even mild renal failure after transplantation might lead to longer hospital stay, more infections and increased overall mortality [33] [34] [35] .