Drug-Coated Balloon Versus Drug-Eluting Stent in Patient With ST-Segment Elevation Myocardial Infarction

Inclusion Criteria:

1. . Age of Patients ≥18 years old;
2. Acute myocardial infarction patients with onset symptoms\<48 hours require emergency PCI;
3. . Diagnosis: Chest pain and other ischemic symptoms accompanied by ST segment elevation in at least two adjacent leads on electrocardiogram (① V2 or V3 lead: male\<40 years ≥ 0.25mV, ≥ 40 years ≥ 0.2mV; Female ≥1.5mV；② Other leads ≥ 1mV), or new left bundle branch block occurs;
4. Criminal blood vessels with clear requirements for emergency PCI;
5. Coronary artery in situ lesions, with a visual reference lumen diameter of ≥ 2mm and ≤ 4mm; Lesion's length\<40mm；
6. After thrombus aspiration and pre dilation, the lesion stenosis is ≤ 50% and there is no C-type or above dissection.
7. He/she or his/her legal representative voluntarily participates in this study and signs an informed consent form.

Exclusion Criteria:

1. The patient has allergies or contraindications to the following medications: Heparin, Aspirin, Clopidogrel, Prasugrel, Ticagrelor, Cilostazol, Indobufen, Contrast Medias (Patients with clear contrast agent allergies such as rash but can be controlled with effective drugs such as glucocorticoids and diphenhydramine in advance can be selected);
2. The patient has active pathological bleeding;
3. History of significant gastrointestinal or urogenital bleeding or bleeding tendency within 3 months prior to surgery, known coagulation disorders (including heparin induced thrombocytopenia);
4. Patients who are pregnant or have the intention to become pregnant during the period of research;
5. Non cardiogenic combined lesions show an expected life expectancy of less than one year;
6. Left main trunk's stenosis ≥ 50%
7. History of coronary artery bypass grafting in the past;
8. Intubation or mechanical ventilation status;
9. . Cardiogenic Shock
10. . Without signature on informed consent