Female Sex

Male (0 pts)+0Female (+1 pt)+1

Congestive Heart Failure (Prior HF Hospitalization or LVEF < 35%)

No CHF (0 pts)+0CHF present (+1 pt)+1

LVEF < 35%

LVEF ≥ 35% or unknown (0 pts)+0LVEF < 35% (+1 pt)+1

Pre-operative IABP (Intra-Aortic Balloon Pump)

No IABP (0 pts)+0Pre-operative IABP in place (+2 pts)+2

COPD (FEV₁/FVC < 0.7 or requiring bronchodilators)

No COPD (0 pts)+0COPD present (+1 pt)+1

Insulin-Dependent Diabetes

Not insulin-dependent DM (0 pts)+0Insulin-dependent DM (+1 pt)+1

Pre-operative Serum Creatinine

< 113 mcmol/L (< 1.2 mg/dL) (0 pts)+0113–177 mcmol/L (1.2–2.0 mg/dL) (+2 pts)+2> 177 mcmol/L (> 2.0 mg/dL) (+5 pts)+5

Prior Cardiac Surgery (Redo Operation)

First cardiac operation (0 pts)+0Redo cardiac surgery (+1 pt)+1

Type of Operation

CABG only (0 pts)+0Valve procedures only (+1 pt)+1Combined CABG + valve (+2 pts)+2

Thakar Score — AKI Risk After Cardiac Surgery