Effect of Allopurinol or Febuxostat to Prevent Contrast Induced Acute Kidney Injury (CI-AKI)

Eligible patients (patients with glomerular filtration rate \< 60 ml/min or high riks patients based on Mehran score) that will be undergoing cardiac catheterization/intervention randomly assigned to receive allopurinol 300 mg or febuxostat 80 mg 12 hours before and 12 after 1 exposure of radiocontrast and IV hydration (normal saline 1 ml/kg/hr 12 pre and post radiocontrast exposure) or placebo and hydration. Exclusion criteria: patients under treatment with allopurinol or febuxostat in the previous seven days, known allergy to allopurinol or febuxostat, patients on renal replacement therapy