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Intraoperative renal hypoxia and risk of cardiac surgery‐associated acute kidney injury

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Acute kidney injury (AKI) is common after cardiac surgery requiring cardiopulmonary bypass. Renal hypoxia may precede clinically detectable AKI. We compared the efficacy of two indices of renal hypoxia, (i)… Click to show full abstract

Acute kidney injury (AKI) is common after cardiac surgery requiring cardiopulmonary bypass. Renal hypoxia may precede clinically detectable AKI. We compared the efficacy of two indices of renal hypoxia, (i) intraoperative urinary oxygen tension (UPO2) and (ii) the change in plasma erythropoietin (pEPO) during surgery, in predicting AKI. We also investigated whether the performance of these prognostic markers varies with preoperative patient characteristics.

Keywords: kidney injury; surgery; renal hypoxia; acute kidney; cardiac surgery

Journal Title: Journal of Cardiac Surgery
Year Published: 2021

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