The number of cardiac angiography and percutaneous coronary interventions (PCI) has increased steadily in recent years. This has resulted in the increasing incidence of contrast-induced acute kidney injury (CIAKI). Major risk factors for CIAKI include older age, diabetes mellitus (DM), chronic kidney disease(CKD), the concurrent use of nephrotoxic drugs, hemodynamic instability, etc. Importantly, DM appears to act as a risk multiplier, meaning that in a patient with CKD it amplifies the risk of CIAKI.