• Journal of critical care · Apr 2022

    Observational Study

    Renal histopathology in critically ill patients with Septic Acute Kidney Injury(S-AKI).

    • Jordán Tenzi, Javier Hurtado, Nicolás Nin, Fernando Rodriguez, Claudia Molina, and Maria Aunchayna.
    • Unidad de Medicina Intensiva Hospital Español, ASSE, Montevideo, Uruguay. Electronic address: jortenz@gmail.com.
    • J Crit Care. 2022 Apr 1; 68: 38-41.

    PurposeTo describe the kidney histopathology of patients with S-AKI and correlate the histological findings with AKI severity, presence of septic shock, and the degree of multiple organic dysfunction (MOD) using the SOFA score.Materials And MethodsThis was a prospective, observational, and analytical study of a cohort of critically ill patients with S-AKI who died from sepsis at the "Hospital Español" intensive care unit (ICU). Kidney necropsies were performed within 2 h after death.ResultsWe considered twenty (20) patients, with all of them exhibiting S-AKI stage 3 at the same time. In renal histopathology analysis, nonspecific tubulointerstitial (TI) lesions were found in almost all patients (95%). The more frequently found nonspecific TI lesions involved leukocyte infiltration (85%). Necrotic TI lesions were found in 6 patients (30%), and necrotic tubular cell casts were the most frequent lesions (50% of patients). It was not possible to demonstrate an association between the presence of necrotic TI lesions and factors such as the APACHE II score, the global SOFA score, ICU stays, AKI length and renal replacement therapy (RRT).ConclusionsThe main histopathological findings in kidney necropsies in patients with S-AKI KDIGO 3, showed nonspecific TI lesions, and TI necrosis was only observed in 30% of the cases; therefore, S-AKI cannot be considered to be synonymous with acute tubular necrosis (ATN).Copyright © 2021 Elsevier Inc. All rights reserved.

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