Comparison of clinical outcomes between routine angiography follow-up and routine clinical 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.