Routine Angiography Follow-Up After Percutaneous Coronary Intervention in High-Risk Patients

Inclusion Criteria: * Age ≥ 18 years. * Successful PCI with at least two of the following high-risk factors: A. Left main lesion; B. Bifurcation lesion (true bifurcation); C. Ostial lesion of main vessels (left anterior descending, left circumflex artery, right coronary artery); D. Chronic total occlusion; E. Multivessel revascularization (≥ 2 vessels); F. In-stent restenosis; G. Diffuse long lesion (lesion length ≥ 30 mm or stent length ≥ 38 mm); H. Severe calcified lesion (Significant severe calcification on angiography); I. Bypass graft lesion; J. Diabetes mellitus; K. Chronic kidney disease (defined as an estimated glomerular filtration rate of \<30 ml per minute per 1.73 m2 of body-surface area or the receipt of dialysis); L. Myocardial infarction; \- He/she or his/her legally authorized representative provides written informed Exclusion Criteria: * Revascularization with bare metal stents and/or balloon angioplasty with non-drug-coated balloons. * Pregnant and/or lactating women. * Life expectancy of less than 2 years. * Repeat interventional therapy is planned. * Subject was unable to provide written informed consent.