DCB Treatment in CTO Guided by IVUS

Exclusion Criteria

• •1. Patients with severe contrast allergy who cannot tolerate coronary angiography;
• •2. Patients known allergy to drug balloon coating;
• •3. Patients who is pregnant or breastfeeding;
• •4. Bleeding or other diseases, such as digestive tract ulcers, blood system diseases, etc., limit the use of platelet aggregation inhibitors and anticoagulation therapy;
• •5. Patients with cardiac shock;
• •6. Patients with a life expectancy of less than 1 year;
• •7. Other situations deemed unsuitable for inclusion by the researcher.