Model for end-stage liver disease
- 25 January 2008
- journal article
- abstracts
- Published by Springer Nature in Der Chirurg
- Vol. 79 (2) , 157-163
- https://doi.org/10.1007/s00104-008-1463-4
Abstract
Im Dezember 2006 wurden in Deutschland und anderen Eurotransplant (ET)-Ländern die Vermittlungsregeln für postmortale Spenderlebern weiterentwickelt. Das zuvor von ET angewandte Allokationssystem basierte auf der Child-Turcotte-Pugh (CTP)-Klassifikation, wobei darüber hinaus der Wartezeit eine besondere Bedeutung zukam. Aktuell wurde es durch ein primär dringlichkeitsorientiertes, auf dem „model for end-stage liver disease“ (MELD) basierenden Allokationssystem ersetzt. Die MELD-Klassifikation ist – wie erste Erfahrungen in den USA gezeigt haben – in der Lage, die Prognose der Mehrzahl der Indikationen zur Lebertransplantation gut abzubilden. Durch die MELD-basierte Allokation konnten in den USA die Wartezeit der transplantierten Patienten und die Mortalität auf der Warteliste reduziert werden. Die MELD-Klassifikation wird jedoch nicht allen Lebererkrankungen gerecht. Aus diesem Grund sind in dem durch ET eingeführten Allokationssystem Ausnahmeregelungen vorgesehen. Zudem wird angestrebt, im Sinne eines lernenden Systems, durch fortlaufende Analyse der Allokation, eine kontinuierliche Feinabstimmung der Verteilungsregeln zu erzielen, um eine gerechte und effiziente Verteilung der Spenderorgane zu gewährleisten. In December 2006 the allocation of livers from deceased donors in Germany and several other Eurotransplant countries was reset. The previous allocation system relied on CTP score to assess the need of transplantation, but it also assigned to waiting time a prominent role in prioritization. That system was replaced by the primarily urgency-oriented model of end-stage liver disease (MELD) allocation system. First experience with this classification in the U.S.A. shows that MELD scores are able to identify the urgency of liver transplantation correctly in most types of liver disease. Due to the MELD-based allocation, the growing waiting time and waiting-list mortality could be counteracted. At the same time it became evident however that MELD scores do not reflect mortality on the waiting list or thus the urgency for all types of liver diseases. Therefore the new allocation system introduced in the Eurotransplant countries contains standardized and flexible exceptions for these diseases. In addition the new allocation rules were created as a learning system. Repeated “fine tuning” of the allocation process based on continuous monitoring of daily allocation practice and clinical studies aim at just and effective distribution of the precious and limited supply of donor organs.Keywords
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