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  • Title: Risk factors for long-term mortality in a large cohort of patients wait-listed for liver transplantation in Brazil.
    Author: Basto ST, Villela-Nogueira CA, Tura BR, Coelho HS, Ribeiro J, Fernandes ES, Schmal AF, Victor L, Luiz RR, Perez RM.
    Journal: Liver Transpl; 2011 Sep; 17(9):1013-20. PubMed ID: 21604358.
    Abstract:
    Liver donor shortage and long waiting times are observed in many liver transplant programs worldwide. The aim of this study was to evaluate the wait list in a developing country, before and after the introduction of the MELD scoring system. In addition, the MELD score ability to predict mortality in this setting was assessed. A single-center retrospective study of patients wait-listed for liver transplantation between 1997 and 2010 was undertaken. There were 1339 and 762 patients on the list in pre-MELD and MELD era, respectively. A competitive risk analysis was performed to assess age, gender, disease diagnosis, serum sodium, MELD, Child-Pugh, ABO type, and body mass index. Also, MELD score predictive ability at 3, 6, 12, and 24 months after list enrollment was evaluated. The overall mortality rates on waiting list were 31.0% and 28.1% (P = 0.16), and the median waiting times were 412 and 952 days (P < 0.001), in pre and MELD eras, respectively. The competitive risk analysis yielded the following significant P values for both eras: HCC (0.03 and <0.001), MELD (<0.001 and 0.002), sodium level (0.002 and <0.001), and Child-Pugh (0.02 and <0.001). The MELD mortality predictions at 3, 6, 12, and 24 months were similar. In conclusion, in a liver transplant program with long waiting times, the MELD system introduction did not improve mortality rate. In either pre and MELD eras, HCC diagnosis, serum sodium, Child-Pugh, and MELD were significant predictors of prognosis. Short- and long-term MELD based mortality predictions were similarly accurate. Strategies for increasing the liver donor pool should be implemented to improve mortality.
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