Kinetic estimated glomerular filtration rate in critically ill patients: beyond the acute kidney injury severity classification system.

Background: Although significant advances have been achieved in acute kidney injury (AKI) research following its classification, potential pitfalls can be identified in clinical practice. The nonsteady-state (kinetic) estimated glomerular filtration rate (KeGFR) could add clinical and prognostic information in critically ill patients beyond the current AKI classification system.

Methods: This was a retrospective analysis using data from the Multiparameter Intelligent Monitoring in Intensive Care II project.