Risk factors and prediction of acute kidney injury after liver transplantation: Logistic regression and artificial neural network approaches

Table 2 Definition and classification of acute kidney injury for patients with liver cirrhosis according to the International Club of Ascites (Angeli et al[23], 2015)

Baseline sCr	A sCr value obtained in 3 mo prior to hospital admission, with preference to the value dated the closest to hospital admission. In patients without a previous sCr value, the value on admission should be used
AKI definition	Increase in sCr ≥ 0.3 mg/dL (≥ 26.5 µmol/L) within 48 h; or the percentage increase in sCr ≥ 50%, which occurred in the last 7 d
Stage 1 AKI	Increase in sCr ≥ 0.3 mg/dL (26.5 µmol/L) or an increase of 1.5 to 2 times the baseline value
Stage 2 AKI	Increase of sCr 2 to 3 times the baseline value
Stage 3 AKI	Increase in sCr > 3 times the baseline or sCr ≥ 4.0 mg/dL (353.6 µmol/L), with acute increase in sCr ≥ 0.3 mg/dL (26.5 µmol/L) or onset of RRT

AKI: Acute kidney injury; ICA: International Club of Ascites. sCr: Serum creatinine; RRT: Renal replacement therapy.