Acute kidney injury (AKI) stage according to International Ascites Club [133]

AKI stageDefinition
1Increase of serum creatinine ≥ 0.3 mg/dL or up to 2-fold from baseline
2Increase in serum creatinine between 2-fold and 3-fold from baseline
3Increase in serum creatinine > 4 mg/dL (353.6 µmol/L) with an acute increase ≥ 0.3 mg/dL (26.5 µmol/L) or > 3-fold from baseline or serum creatinine or initiation of renal replacement therapy