Fujii and colleagues define 'subacute' kidney injury (s-AKI) as AKI that takes >7 days to develop, timed from admission or lowest creatinine measurement after admission. Although s-AKI is unlikely to be a distinct syndrome from AKI, the association with increased mortality highlights the need to monitor patient creatinine levels.
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Endre, Z., Pickering, J. Late-onset acute kidney injury—subacute or more of the same?. Nat Rev Nephrol 10, 133–134 (2014). https://doi.org/10.1038/nrneph.2014.9
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DOI: https://doi.org/10.1038/nrneph.2014.9
