• J Guitard, O Cointault, N Kamar, F Muscari, L Lavayssière, B Suc, D Ribes, L Esposito, K Barange, D Durand, and L Rostaing.
• Multiorgan Transplant Unit, University Hospital, Toulouse, France.
• Clin Nephrol. 2006 Feb 1; 65 (2): 103-12.

AimsTo identify the predictive factors for acute renal failure (ARF) in a retrospective study of 100 orthotopic liver transplantations (OLT) performed in 94 patients between 2000 and 2003.MethodsAcute renal failure (ARF) was defined using the RIFLE criteria, i.e. injury when creatinine doubles or GFR halves, and failure when creatinine trebles or GFR decreases by > 75%. Patients on dialysis pre OLT (n = 3) were excluded from the study. Immunosuppression included steroids, calcineurin inhibitors (CNIs), with (n = 32) or without mycophenolate mofetil. A total of 85% of patients also received induction therapy with antithymocyte globulins (29%) or anti-CD25 monoclonal antibodies (56%).Results39 patients (41.5%) and 21 (22.3%) patients developed injury, and failure, respectively. Of these, 10 (10.6%) underwent dialysis. Univariate analysis revealed that acute renal dysfunction with a RIFLE score > or = 3 was significantly associated with a pre-operative serum creatinine level of > 100 micromol/l, pre-operative creatinine clearance of < 75 ml/mn, need for a transfusion (> 10 red packed units), post-operative diuresis of < 100 ml/h, use of vasopressive drugs, times to aspartate (AST) and alanine (ALT) aminotransferase peaks of > 20 and > 24 hours, respectively, relaparotomy, CNIs transient discontinuation, and the use of lower daily dosage of CNIs at post-OLT Days 3, 5, 7 and 15. In multivariate analysis, failure was significantly associated with time to AST peak (> 20 h) (OR 6.35 (1.2 - 33.6), p = 0.029), post-operative diuresis (< 100 ml/h) (OR 9.8 (2.03 47.3), p = 0.004), post-operative use of vasopressive drugs (OR 9.91 (2.02 - 48.7), p = 0.004), and transient CNIs withdrawal (OR 51.08 (7.58-344.1), p < 0.0001). Finally, the occurrence of ARF was significantly associated with an increased number of days on mechanical ventilation, on stay-in intensive care unit (ICU), and on overall hospitalization time.ConclusionARF is quite common after OLT and significantly increases the post-operative time at the hospital, thereby increasing the OLT cost. Its independent predictive factors are mainly related to perioperative events.

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