Table 1 Description of RIFLE [1] and AKIN [2] definition criteria for AKI used in analysis
Definition System | AKI | ||
|---|---|---|---|
RIFLE | Class R (risk) | Class I (injury) | Class F (failure) |
Seven-day interval | sCr ≥1.5-fold increase or eGFR >25% decrease compared to baseline | sCr ≥2-fold increase or eGFR >50% decrease compared to baseline | sCr ≥3-fold increase or eGFR >75% decrease compared to baseline, or sCr increase to ≥4 mg/dL in setting of an increase of ≥0.5 mg/dL |
AKIN | Stage 1 | Stage 2 | Stage 3 |
48-hour moving window | sCr ≥1.5-fold increase or ≥ 0.3 mg/dL | sCr ≥2-fold increase | sCr ≥3-fold increase compared to baseline, or sCr increase to ≥4 mg/dL in setting of an increase of ≥0.5 mg/dL, or RRT |