Patients with type 2 diabetes and moderate to severe coronary artery stenosis who were treated at Zhejiang Second Hospital and cooperative hospitals were randomly divided into a patient management group based on continuous continuous glucose monitoring (CGM) or a patient management group based on HbA1c. Both groups controlled cardiovascular risk factors according to the Chinese Guidelines for the Prevention and Treatment of Type 2 Diabetes (2020) and the ADA Guidelines for the Prevention and Treatment of Diabetes (2023), and conducted HbA1c testing every 3 months. In the CGM-based glucose management group, CGM measurements will be performed at baseline and at 6, 12, 18, and 24 months. In the CGM-guided treatment group, the target TIR>70%, TBR<4%, TAR<25%, and HbA1c<7.0%; in the HbA1c-guided treatment group, the target HbA1c<7.0%. The primary endpoint was major adverse cardiovascular events (MACE: CV death, nonfatal myocardial infarction, nonfatal stroke).

Inclusion Criteria:

Male or female between 35 and 75 years old type 2 diabetes HbA1C: 7.5%-10% Moderate to severe coronary artery stenosis (the degree of stenosis of any major coronary artery is ≥50% as assessed by coronary angiography or coronary CTA) The blood sugar lowering regimen has been stable in the past 3 months Ability to understand the requirements of the study and provide informed consent

Exclusion Criteria:

Type 1 diabetes or other types of diabetes Acute myocardial infarction or stroke within the past three months Ketoacidosis, hyperosmolar hyperglycemic state Relative or absolute contraindications to contrast agent examinations such as severe renal insufficiency, contrast agent allergy, and hyperthyroidism Elective surgery planned within 2 years Preparing for pregnancy or becoming pregnant Life expectancy less than 2 years Skin allergies and other situations where CGM cannot be used Currently participating in other clinical studies