Data were expressed as Median (25-75 median percentiles) or frequency (%) as appropriate. Stage I of AKI: Increase ≥0.3 mg/dL (≥26.4 mmol/L), or Increase ≥150-200% (1.5-2-fold) from baseline. Stage II of AKI: Increase >200-300% (2-3-fold) from baseline. Stage III of AKI: Increase > 300% (>3-fold) from baseline, or SCr to ≥4 mg/dL (≥354 mmol/L) with an acute increase ≥0.5 mg/dL (≥44 mmol/L).
Table (3): Characteristics of adult patients undergoing cardiac surgery according to the occurrence of acute kidney injury (AKI).