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

Inclusion Criteria: * Age 18 years and older who are scheduled to coronary intervention * Patients with Mehran score \> 5 or modified Mehran score \>2 even glomerular filtration rate \> 60 ml/min (high risk patients) * Glomerular Filtration Rate \< 60 ml/min * All the patients provided written informed consent for the procedures and the test drug Exclusion Criteria: * Patients with shorter hospital stay (\<48 hours) * Patients under treatment with allopurinol of febuxostat * Patients on renal replacement therapy * Known allergy to allopurinol or febuxostat