Table 3.

Classification of prerenal and intrinsic acute kidney injury according to the criteria of the Acute Kidney Injury Network (5)

Prerenal (n = 34)Intrinsic (n = 52)
Stage 1Stage 2Stage 3Stage 1Stage 2Stage 3
Number of probands7 (20.6%)9 (26.5%)18 (52.9%)13 (25.0%)15 (28.8%)24 (46.2%)
eGFR on admission (ml/min per 1.73 m2)29 (16 to 35)21 (19 to 31)10 (8 to 14)28 (18 to 48)19 (15 to 29)10 (7 to 17)
Creatinine on admission (mg/dl)2.3 (1.6 to 3.7)3.0 (2.5 to 3.1)5.2 (4.4 to 7.2)2.2 (1.4 to 3.1)3.2 (2.1 to 4.0)5.8 (3.7 to 6.9)
Creatinine prior to admission (mg/dl)1.6 (1.0 to 2.3)1.1 (1.0 to 1.3)1.1 (1.0 to 2.3)1.1 (0.8 to 1.5)1.3 (0.9 to 1.8)1.1 (1.0 to 1.7)
Creatinine at discharge (mg/dl)1.8 (1.4 to 2.1)1.1 (1.0 to 1.7)1.3 (1.1 to 1.8)1.3 (1.0 to 1.8)1.5 (1.1 to 2.3)1.9 (1.3 to 3.8)
Criteria stage 1Increase in creatinine of ≥0.3 mg/dl or increase to ≥150 to 200% from baseline OR diuresis <0.5 ml/kg per hour for >6 hours
Criteria stage 2Increase in creatinine to >200 to 300% from baseline OR diuresis <0.5 ml/kg per hour for >12 hours
Criteria stage 3Increase in creatinine to >300% from baseline OR creatinine ≥4.0 mg/dl with an acute increase of at least 0.5 mg/dl OR diuresis <0.3 ml/kg per hour for 24 hours or anuria for 12 hours
  • The data are presented as medians and interquartile ranges. Creatinine prior to admission was available in 60 of 86 patients. eGFR, estimated GFR.