Evaluation of safety, success rate, and clinical impact of percutaneous coronary intervention without contrast medium (PCIWOC): A prospective cohort study - The clinical significance of PCI without contrast medium

This study included 106 lesions from 81 patients. Successful noncontrast PCI was performed in 95 (90%) lesions. Contrast-induced acute kidney injury (CI-AKI) was observed in 4 (5%). Six-month worsening renal function (WRF) was observed in 18 individuals (22%). While successful noncontrast PCI was not associated with the incidence of CI-AKI, successful noncontrast PCI was inversely associated with WRF (hazard ratio, 0.28; 95% confidence interval, 0.09-0.90) after adjustment for renal function.