Grades of Harjai et al for Contrast Nephropathy

Patient selection: exposure to contrast material

Time interval for creatinine measurements: 1.6 +/- 1.9 days (or 0-3.5 days after exposure)

Parameters:

(1) baseline serum creatinine in mg/dL

(2) serum creatinine in mg/dL after the contrast exposure

delta serum creatinine =

= (creatinine after) - (baseline creatinine)

increase as a percent =

= (delta creatinine) / (baseline creatinine)

where:

• MACE = major adverse cardiovascular events

All cause mortality at 3 years was 50% for patients in Grade 2 versus 10% for other grades.