What was your rationale for this study and what was known before?
In several previous studies, routine follow-up coronary angiography (FUCAG) after percutaneous coronary intervention (PCI) has been reported to have increased the rate of coronary revascularisation, but not to have improved clinical outcomes. Based on these study results, the current clinical guidelines in the United States of America have already disregarded routine FUCAG, even after PCI for left main coronary artery disease. On the other hand, prior studies carried out in the drug-eluting stent (DES) era were performed in the context of pivotal randomised trials. There have been no randomised clinical trials evaluating the clinical impact of routine FUCAG post PCI in the real-world clinical practice including in patients with, for example, complex coronary artery disease and acute myocardial infarction, at high risk for cardiovascular events.
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