Fig. 1From: AKI after pediatric cardiac surgery for congenital heart diseases–recent developments in diagnostic criteria and early diagnosis by biomarkers-Comparison of urinary albumin in each pRIFLE category. Urinary albumin corrected by urinary creatinine. The graph shows a step-by-step increase in urinary albumin by the pRIFLE criteria. Categories in pRIFLE criteria: N normal, R risk, I injury, and F failure. Reference [15]Back to article page