The relevance of renal oxygen saturation over other markers in cardiac surgery–associated acute kidney injury

Abstract

Acute kidney injury (AKI) is a severe complication and a strong risk factor for death in patients undergoing cardiac surgery,1, 2 so much so that the term cardiac surgery–associated acute kidney injury (CSA-AKI) has been coined, and establishing a predictive model for CSA-AKI has been the focus of past research. Various predictive models have been established to predict AKI, such as the AKI after cardiac surgery score, the Cleveland Clinic score, the Mehta score, and the simplified renal index score. However, the discrimination and calibration predictive value for each of these models is not convincing, and therefore these models are barely acceptable.