<prompt> Contrast induced nephropathy defined as:Rise in Serum Creatinine by 0.5 mg in 48 hoursRise in Serum Creatinine by 1 mg in 48 hoursRise in Serum Creatinine by 1.5 mg in 48 hoursRise in Serum Creatinine by 2 mg in 48 hours  <response>: Contrast Induced nephropathy: Rise in Serum Creatinine by 0.5 mg in 48 hours or 25 from baseline within 48-72 hours from IV Contrast. Most impoant step in Management of Contrast Induced nephropathy: HYDRATION. 