• David J Taber, Derek DuBay, John W McGillicuddy, Satish Nadig, Charles F Bratton, Kenneth D Chavin, and Prabhakar K Baliga.
• Division of Transplant Surgery, Medical University of South Carolina, Charleston, SC. Electronic address: taberd@musc.edu.
• J. Am. Coll. Surg. 2017 Apr 1; 224 (4): 585-592.

BackgroundIn December 2014, a new kidney allocation system (KAS) was implemented nationwide with the goal of improving longevity matching, increasing access to sensitized patients, and improving racial/ethnic disparities.Study DesignNational cohort study of US kidney transplantation programs, analyzing hospital-level outcomes (October 2012 to June 2016) using University HealthSystem Consortium data. In-hospital outcomes and costs were analyzed for trends over time using interrupted time series analysis with segmented regression.ResultsThere were 38,016 kidney transplantation procedures analyzed during the 3.8-year period. Over time, there was a mean increase of 2.7 cases/month (95% CI -0.02 to 5.4; p = 0.059), unaffected by KAS (18.9 case increase; p = 0.5601). Implementation of KAS led to significant changes in patient demographics, including a decrease in age (-2.8 years; p < 0.001), increase in number of African Americans (3.8%; p < 0.001), decrease in number of Caucasians (6.0%; p < 0.001), increase in number of Hispanics (2.9%; p < 0.001), increase in congestive heart failure (1.3%; p < 0.001), and decrease in diabetes with complications (4.0%; p < 0.001). The KAS had no impact on length of stay (0.12 days; 95% CI -0.11 to 0.35), length of stay index (0.01; 95% CI -0.03 to 0.05), ICU cases, ICU length of stay, patient safety indicators, or in-hospital mortality. The KAS led to a significant increase in delayed graft function rates (5.4%; 95% CI 23.3% to 7.4%); total in-hospital costs ($2,429; 95% CI $594 to $4.263); and 7-day (2.2%), 14-day (2.6%), and 30-day (2.7%) readmission rates.ConclusionsPolicy changes in organ allocation can have a significant impact on perioperative costs and outcomes, which can have a downstream influence on transplantation center perisurgical care processes.Copyright © 2016 American College of Surgeons. Published by Elsevier Inc. All rights reserved.

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