Risk Factors for Acute Kidney Injury after Moderate Hypothermic Circulatory Arrest in Hemiarch Replacement

Table 2

KDIGO classification scheme for acute kidney injury.

Stage	Plasma creatinine increase
1	1.5 to 1.9 times baseline or ≥0.3 mg/dl increase
2	2.0 to 2.9 times baseline
3	≥3.0 times baseline or increase in plasma creatinine to ≥4.0 mg/dl or requirement of renal replacement therapy

Acute kidney injury is diagnosed when there is an increase in plasma creatinine concentration ≥0.3 mg/dl within 48 hours or an increase of at least ≥1.5 times baseline within 1 week. KDIGO, Kidney Disease: Improving Global Outcomes.