Drug-coated Balloon Versus Drug-eluting Stent in the Treatment of Coronary Artery Lesions in STEMI Patients in De Novo Coronary Lesions

Inclusion Criteria: 1. Clinical criteria 1)over 18 years old 2)Angiographic confirmation of acute myocardial infarction 3)EKG prompts STEM basis 4)Sign informed consent 2. Angiographic criteria 1)In situ coronary artery disease 2)The reference diameter of the target vessel was 2.5-3.5 mm and the length was less than 28 mm 3)Visual examination showed that the diameter of lesions in criminals was narrower than or equal to 80%. Exclusion Criteria: 1.Clinical criteria 1. LVEF\<30% 2. Killip grading is greater than 3 3. Significant abnormalities in hemorrhagic quality or known coagulation function 4. History of intracranial tumors, aneurysms, arteriovenous malformations or cerebral hemorrhage;There was a history of stroke or TIA in 6 months and gastrointestinal bleeding in 2 months.Major operations were performed within 6 weeks.Recent or known platelets \< 100,000/mm3 or hemoglobin \< 10 g/dL. 5. Planned elective surgery may lead to early discontinuation of ADP receptor antagonists 6. The expected survival time of patients with other systemic diseases, such as malignant tumors is less than 1 year 2.Angiographic criteria 1)Left main lesion 2)The grade of dissection is greater than or equal to grade C lesions. 3)Coronary artery bridge lesions 4)In-stent restenosis 5)Severe stenosis of non-criminal lesions requiring selective treatment