contrast-induced acute kidney injury
Acute deterioration in kidney function following contrast media exposure during cardiac catheterization procedures.
Full Definition
Contrast-induced acute kidney injury (CI-AKI) represents one of the most significant complications of cardiac catheterization and intervention, particularly in high-risk patients. The condition is defined as an increase in serum creatinine of ≥0.5 mg/dL or ≥25% from baseline within 48-72 hours of contrast exposure. Risk factors include pre-existing chronic kidney disease, diabetes mellitus, dehydration, heart failure, advanced age, and high contrast volume relative to kidney function. Prevention strategies focus on adequate hydration, minimizing contrast volume, using iso-osmolar or low-osmolar contrast agents, and avoiding nephrotoxic medications. The contrast volume to creatinine clearance ratio serves as a useful predictor, with ratios >3.7 associated with increased CI-AKI risk.
Usage
Usage note: Use standardized definition when documenting and reporting CI-AKI cases.
In Context
- "CI-AKI prevention included pre-hydration and limiting contrast volume to 150mL in this diabetic patient." — Pre-procedure risk assessment
- "Post-procedural creatinine increased from 1.4 to 1.9 mg/dL, consistent with contrast-induced acute kidney injury." — Complication documentation