Acute kidney failure, stage 1

**Definition:** Rate of change of serum creatinine: Increase 1.5-1.9 times baseline within 7 days OR increase by 0.3 mg/dl increase within 48 h OR Magnitude of urine output: <0.5 ml/kg/h for 6-12 hours

**Long definition:** Rate of change of serum creatinine: Increase 1.5-1.9 times baseline within 7 days OR increase by 0.3 mg/dl increase within 48 h OR Magnitude of urine output: <0.5 ml/kg/h for 6-12 hours

**Inclusions:** - Acute nontraumatic kidney injury, mild