Overview

This research will explore the association between blood serum renalase and microcirculation obstruction in patients with acute myocardial infarction (AMI) after primary percutaneous coronary intervention (PCI). The investigators aim to identify potential risk factors for microcirculation obstruction in AMI patients after PPCI.

Eligibility

Inclusion Criteria:

1. Age ≥ 18 years;
2. STEMI symptom onset time < 12 hours;
3. STEMI symptom onset time 12-48 hours with persistent ischemic symptoms, hemodynamic instability, or life-threatening ventricular arrhythmias;
4. High-risk NSTEMI;
5. Emergency PCI;
6. Voluntary informed consent.

Exclusion Criteria:

1. Non-obstructive acute myocardial infarction;
2. Severe chronic kidney disease (defined as estimated glomerular filtration rate < 20 mL/min per 1.73 m²);
3. Life expectancy < 1 year;
4. Pregnant or planning to become pregnant;
5. Emergency PCI failure.