• Peter Pickkers, Michael Darmon, Eric Hoste, Michael Joannidis, Matthieu Legrand, Marlies Ostermann, John R Prowle, Antoine Schneider, and Miet Schetz.
• Department of Intensive Care, Radboud University Medical Centre, PO Box 9101, NL 6500 HB, Nijmegen, The Netherlands.
• Intensive Care Med. 2021 Aug 1; 47 (8): 835-850.

AbstractAcute kidney injury (AKI) is now recognized as a heterogeneous syndrome that not only affects acute morbidity and mortality, but also a patient's long-term prognosis. In this narrative review, an update on various aspects of AKI in critically ill patients will be provided. Focus will be on prediction and early detection of AKI (e.g., the role of biomarkers to identify high-risk patients and the use of machine learning to predict AKI), aspects of pathophysiology and progress in the recognition of different phenotypes of AKI, as well as an update on nephrotoxicity and organ cross-talk. In addition, prevention of AKI (focusing on fluid management, kidney perfusion pressure, and the choice of vasopressor) and supportive treatment of AKI is discussed. Finally, post-AKI risk of long-term sequelae including incident or progression of chronic kidney disease, cardiovascular events and mortality, will be addressed.© 2021. The Author(s).

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