Impact of Contrast-Induced Nephropathy on Long-Term Renal Function after Coronary Angiography and Contrast-Enhanced Computed Tomography

BackgroundIt remains unclear whether contrast-induced nephropathy (CIN) has a prognostic impact on subsequent renal dysfunction and whether deteriorating renal function is a risk factor for CIN. This study aimed to evaluate the occurrence of CIN in patients with pre-existing renal dysfunction and investigate the long-term effects of worsening renal function after coronary angiography or contrast-enhanced computed tomography (CT). The prognostic factors of worsening renal dysfunction were also analyzed. MethodsThis was a prospective cohort study of patients at risk for CIN, defined as an estimated glomerular filtration rate (eGFR)