Article

Should Liver Transplantation in Patients with Model for End-Stage Liver Disease Scores <= 14 Be Avoided? A Decision Analysis Approach

Division of Transplantation, Department of Surgery, University of Washington, Seattle, WA 98195, USA.
Liver Transplantation (Impact Factor: 3.79). 02/2009; 15(2):242-54. DOI: 10.1002/lt.21703
Source: PubMed

ABSTRACT Studies have shown that liver transplantation offers no survival benefits to patients with Model for End-Stage Liver Disease (MELD) scores <or= 14 in comparison with remaining on the waitlist. The consensus of a 2003 transplant community national conference was that a minimum MELD score should be required for placement on the liver waitlist, but no minimum listing national policy was enacted at that time. We developed a Markov microsimulation model to compare results under the present US liver allocation policy with outcomes under a "Rule 14" policy of barring patients with a MELD score of <or=14 from the waitlist or transplantation. For probabilities in the microsimulation model, we used data on all adult patients (>or=18 years) listed for or undergoing primary liver transplantation in the United States for chronic liver disease from 1/1/2003 through 12/31/2007 with follow-up until 2/1/2008. The "Rule 14" policy gave a 3% improvement in overall patient survival over the present system at 1, 2, 3, and 4 years and predicted a 13% decrease in overall waitlist time for patients with MELD scores of 15 to 40. Patients with the greatest benefit from a "Rule 14" policy were those with MELD scores of 6 to 10, for whom a 17% survival advantage was predicted from waiting on the list versus undergoing transplantation. Our analysis supports changing the national liver allocation policy to not allow liver transplantation for patients with MELD <or= 14.

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