Oxford University Press, Clinical Kidney Journal, 2023
DOI: 10.1093/ckj/sfad031
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Abstract Worsening kidney function (WKF) is common in patients with acute heart failure (AHF) syndromes. Although WKF has traditionally been associated with worse outcomes on a population level, serum creatinine concentrations vary greatly during episodes of worsening heart failure, with substantial individual heterogeneity in terms of their clinical meaning. Consequently, interpreting such changes within the appropriate clinical context is essential to unravel the pathophysiology of kidney function changes and appropriately interpret their clinical meaning. This article aims to provide a critical overview of WKF in AHF aiming to provide physicians with some tips and tricks to appropiately interpret kidney function changes in the context of AHF.