Table 4.

Incidence of CN for each prophylactic treatment stratified by definitions of CN

Definition of Contrast Nephropathy
Creatinine Increase >0.5 mg/dl or ≥25% within 7 dCreatinine Increase >0.5 mg/dl within 7 dCreatinine Increase ≥25% within 7 dCreatinine Increase >0.5 mg/dl or ≥25% within 2 da
No treatment11%3%11%7%
Sodium bicarbonate + NAC15%8%15%12%
NAC alone15%8%15%15%
Sodium bicarbonate alone31%16%30%35%
  • a Maximum postcontrast creatinine was available within 2 d of contrast exposure in 10,422 cases.