RIR and the Impact on Clinical Outcomes in Patients Undergoing PCI

Inclusion Criteria: 1. Participants who understand and sign the informed consent form voluntarily; 2. Age ≥ 18 years old and ≤ 80 years old, regardless of sex; 3. The hospitalized patients with coronary heart disease undergoing PCI; 4. Complete all planned PCI during hospitalization Exclusion Criteria: 1. Patients do not receive standardized treatment according to guidelines after being diagnosed with coronary heart disease; 2. Uncontrolled infectious diseases during the screening period; 3. In the screening stage, patients with immune diseases or immune-related diseases such as systemic lupus erythematosus, asthma, inflammatory bowel disease, gout, malignant tumor and so on; 4. Long-term use of non-steroidal anti-inflammatory drugs, hormones, immunomodulatory and chemotherapeutic drugs during the study period; 5. Surgical or interventional treatment was performed within 3 months before the screening period; 6. Pregnant women, lactating women or women of childbearing age who do not use effective contraceptives; 7. Participated in other clinical trials within 3 months before the screening period; 8. The researchers determined that other conditions in which the patient was not suitable to participate in the clinical trial.