Clinically adjudicated deceased donor acute kidney injury and graft outcomes

Author:

Mansour Sherry G.,Khoury Nadeen,Kodali Ravi,Virmani Sarthak,Reese Peter P.,Hall Isaac E.,Jia Yaqi,Yamamoto Yu,Thiessen-Philbrook Heather R.ORCID,Obeid Wassim,Doshi Mona D.,Akalin Enver,Bromberg Jonathan S.,Harhay Meera N.,Mohan Sumit,Muthukumar Thangamani,Singh Pooja,Weng Francis L.,Moledina Dennis G.,Greenberg Jason H.,Wilson Francis P.ORCID,Parikh Chirag R.ORCID

Abstract

Background Acute kidney injury (AKI) in deceased donors is not associated with graft failure (GF). We hypothesize that hemodynamic AKI (hAKI) comprises the majority of donor AKI and may explain this lack of association. Methods In this ancillary analysis of the Deceased Donor Study, 428 donors with available charts were selected to identify those with and without AKI. AKI cases were classified as hAKI, intrinsic (iAKI), or mixed (mAKI) based on majority adjudication by three nephrologists. We evaluated the associations between AKI phenotypes and delayed graft function (DGF), 1-year eGFR and GF. We also evaluated differences in urine biomarkers among AKI phenotypes. Results Of the 291 (68%) donors with AKI, 106 (36%) were adjudicated as hAKI, 84 (29%) as iAKI and 101 (35%) as mAKI. Of the 856 potential kidneys, 669 were transplanted with 32% developing DGF and 5% experiencing GF. Median 1-year eGFR was 53 (IQR: 41–70) ml/min/1.73m2. Compared to non-AKI, donors with iAKI had higher odds DGF [aOR (95%CI); 4.83 (2.29, 10.22)] and had lower 1-year eGFR [adjusted B coefficient (95% CI): -11 (-19, -3) mL/min/1.73 m2]. hAKI and mAKI were not associated with DGF or 1-year eGFR. Rates of GF were not different among AKI phenotypes and non-AKI. Urine biomarkers such as NGAL, LFABP, MCP-1, YKL-40, cystatin-C and albumin were higher in iAKI. Conclusion iAKI was associated with higher DGF and lower 1-year eGFR but not with GF. Clinically phenotyped donor AKI is biologically different based on biomarkers and may help inform decisions regarding organ utilization.

Funder

American Heart Association

Robert E. Leet and Clara Guthrie Patterson Trust

NIDDK

Publisher

Public Library of Science (PLoS)

Subject

Multidisciplinary

Reference36 articles.

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