Factors that can suggest renal atheroemboli include the following: Delay in onset of increased creatinine > 48 hours after the procedure Presence of other atheroembolic findings (eg, livedo reticularis of the lower extremities or bluish discoloration of the toes) Persistently poor renal function that may deteriorate in a stepwise fashion Transient eosinophilia or eosinophiluria and low C3 complement levels (measured if atheroemboli are seriously considered) Treatment of Contrast Nephropathy Supportive care Treatment is supportive.