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American Transplant Congress abstracts

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Articles tagged "Allocation"

  • 2022 American Transplant Congress

    Patient Preferences for Waiting Time and Kidney Quality: A Discrete Choice Experiment

    S. Mehrotra

    Industrial Engineering and Management Sciences, Northwestern University, Evanston, IL

    *Purpose: The purpose of this study was to elicit patient preferences involving tradeoffs between a lower quality kidney offered today and a higher quality, future…
  • 2022 American Transplant Congress

    Prediction of Waitlist Mortality in Liver Transplant Candidates: Do Time-Varying Models Help?

    A. Kwong1, W. Kim1, D. Schladt2, A. Wey2, J. Snyder2, A. Israni2, J. Lake3

    1Stanford University, Stanford, CA, 2Hennepin Healthcare Research Institute, Minneapolis, MN, 3University of Minnesota, Minneapolis, MN

    *Purpose: In the United States, priority on the liver transplant waitlist is determined by the model for end-stage liver disease (MELD)-Na, a score composed of…
  • 2022 American Transplant Congress

    Regional Variation in Early Effects of Acuity Circle-Based Liver Allocation

    T. Ivanics1, S. Nagai2, T. Kitajima2, S. Shimada2, T. Shamaa2, K. Collins2, M. Rizzari2, A. Yoshida2, D. Moonka2, M. Abouljoud2

    1University of Toronto - University Health Network, Toronto, ON, Canada, 2Henry Ford Hospital, Detroit, MI

    *Purpose: Liver allocation in the United States was updated on February 4th, 2020, byintroducing the acuity circle (AC)-based model. This study evaluated the early effects…
  • 2022 American Transplant Congress

    Normothermic Machine Perfusion (NMP) Improves Access to Transplantation for Late Liver Re-Transplant Candidates

    D. Sneiders1, H. Lembach1, A. Hann1, A. Nutu1, J. Hodson1, J. Isaac1, R. Taylor2, M. Armstrong1, T. Perera1, H. Hermien1

    1Queen Elizabeth Hospital, Birmingham, United Kingdom, 2NHS Blood and Transplant, bristol, United Kingdom

    *Purpose: Late liver re-transplantation (LLrT) is a complex surgical procedure. Candidates for LLrT spend longer on the waitlist than primary transplant candidates due to selectivity…
  • 2022 American Transplant Congress

    Center Variation is the Major Driver of Geographic Disparities in Access to Kidney Transplants Among Waitlisted Candidates

    D. Stewart, A. Robinson, A. Wilk, D. Klassen

    United Network for Organ Sharing, Richmond, VA

    *Purpose: The OPTN’s monitoring of equity in access to deceased donor kidney (KI) transplants (tx) among waitlisted candidates has consistently found service area (DSA) of…
  • 2022 American Transplant Congress

    Avoiding Cytomegalovirus Mismatching in Deceased Donor Kidney Allocation System in the US

    B. Tanriover1, B. Sandikci2, Y. Ulukus3, M. A. Ergun2, V. K. Ariyamuthu1, M. Al-Obaidi4, T. Zangeneh4

    1Division of Nephrology, The University of Arizona, Tucson, AZ, 2Department of Industrial Engineering, Istanbul Technical University, Istanbul, Turkey, 3Department of industrial Engineering, Istanbul Technical University, Istanbul, Turkey, 4Division of Infectious Disease, The University of Arizona, Tucson, AZ

    *Purpose: Cytomegalovirus (CMV) mismatch, donor-positive/recipient-negative serostatus (D+/R-), carries a high risk of developing CMV infection, graft failure mortality. The current kidney allocation system (KAS) does…
  • 2022 American Transplant Congress

    Failure to Account for Social Determinants of Health in Non-HCC MELD Exceptions Exacerbates Geographic Disparities in Access to Liver Transplantation

    R. M. Cannon, P. MacLennan, S. S. Sheikh, B. J. Orandi, A. Nasell, J. T. Walker, J. E. Locke

    University of Alabama at Birmingham, Birmingham, AL

    *Purpose: Non-HCC MELD exceptions have been previously shown to give excess priority for transplant in certain UNOS Regions, but this phenomenon has not been examined…
  • 2022 American Transplant Congress

    Disparities in Liver Transplant Access for HCC Patients Based on Patient Blood Type and the Intensity of Competition for Organs Under MMAT-3

    A. J. Ahearn, H. Chowdhry, J. L. Dodge, K. Zhou

    University of Southern California, Los Angeles, CA

    *Purpose: Recent policy changes (acuity circles and MMAT-3 for HCC MELD exception) aimed to reduce geographic disparities in access to liver transplant (LT) and mitigate…
  • 2022 American Transplant Congress

    A Machine Learning Approach to Estimating Anticipated Waiting Time and Survival Benefit in Older Kidney Transplant Candidates

    D. M. Vock1, E. S. Helgeson2, A. J. Matas2

    1University of Minnesota, Minneapolis, MN, 2U MN, Mpls, MN

    *Purpose: Older kidney transplant (ktx) recipients face worse post-transplant survival due to increasing age and more comorbidities. Simultaneously, older ktx candidates are more likely to…
  • 2022 American Transplant Congress

    Concurrent Use of Two Methods Prevents Erroneous HLA Typing of Deceased Organ Donors – An Essential Strategy for Patient Safety and Accurate Virtual Crossmatching for Broader Sharing

    R. Rajalingam, T. dela Cruz, C. Dames, L. Pagaduan, Y. Cho, D. Kong

    Immunogenetics and Transplantation Laboratory (ITL), University of California San Francisco, San Francisco, CA

    *Purpose: Comprehensive and accurate typing for ever-increasing alleles of all eleven HLA genes within a short turnaround time is a crucial initial step for allocating…
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