Real-world use of intravascular ultrasound in Japan: a report from contemporary multicenter PCI registry

Clinical trial data suggest that intravascular ultrasound (IVUS) may improve clinical outcomes after PCI. The aim of this study was to investigate the safety of IVUS in its broader use for percutaneous coronary intervention (PCI). A total of 11,570 consecutive patients undergoing PCI between 2008 and 2014 in Japan were analyzed. Associations between IVUS use, PCI-related complications were assessed with logistic regression and propensity score matching analyses. Subgroup analysis was performed in elective PCI patients. IVUS was used in 84.8% of patients ( N = 9814; IVUS group); its use was almost universal in elective PCIs (90.8 vs. 81.7% in urgent/emergent PCIs, P