Σφακιανάκης Αλέξανδρος
ΩτοΡινοΛαρυγγολόγος
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alsfakia@gmail.com

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Κυριακή 18 Μαρτίου 2018

Comparing Simultaneous Liver-Kidney Transplant Strategies: A Modified Cost-Effectiveness Analysis

Background The proportion of patients with kidney failure at time of liver transplantation is at an historic high in the United States. The optimal timing of kidney transplantation with respect to the liver transplant is unknown. Methods We used a modified cost-effectiveness analysis to compare four strategies: the old system ("pre-OPTN"), the new Organ Procurement Transplant Network (OPTN) system since August 10, 2017 ("OPTN"), and two strategies which restrict simultaneous liver-kidney transplants ("safety net" and "stringent"). We measured "cost" by deployment of deceased donor kidneys (DDKs) to liver transplant recipients and effectiveness by life years (LYs) and quality-adjusted life years (QALYs) in liver transplant recipients. We validated our model against Scientific Registry for Transplant Recipients data. Results The OPTN, safety net and stringent strategies were on the efficient frontier. By rank order, OPTN > safety net > stringent strategy in terms of LY, QALY and DDK deployment. The pre-OPTN system was dominated, or outperformed, by all alternative strategies. The incremental LY per DDK between the strategies ranged from 1.30 to 1.85. The incremental QALY per DDK ranged from 1.11 to 2.03. Conclusion These estimates quantify the "organ"-effectiveness of various kidney allocation strategies for liver transplant candidates. The OPTN system will likely deliver better liver transplant outcomes at the expense of more frequent deployment of DDKs to liver transplant recipients. Corresponding Authors: Jane C. Tan, 750 Welch Rd, Suite 200, MC 5785, Palo Alto CA 94304, 650-725-9891. janetan@stanford.edu; W. Ray Kim, 300 Pasteur Drive, Always M211, Stanford CA 94305, 650-725-6511. wrkim@stanford.edu Authorship: X.S.C.: Research design, data acquisition, data analysis, results interpretation, paper writing. W.R.K.: Research design, results interpretation, paper writing. J.C.T.: Research design, data acquisition, results interpretation, paper writing. G.M.C.: Research design, results interpretation, paper writing. J.G.: Research design, data analysis, results interpretation, paper writing. The authors declare no conflict of interest. Research reported here was supported by the John M. Sobrato Gift Fund (J.C.T.) and National Institute of Diabetes and Digestive and Kidney Diseases of the National Institutes of Health under award number K24DK092336 (W.R.K.) and K24 DK085446 (G.M.C.). Copyright © 2018 Wolters Kluwer Health, Inc. All rights reserved.

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