This is a national, multicenter prospective observational study of patients presenting to hospitals in Armenia with STEMI diagnosis.

The main questions it aims to answer are:

• Determine the rate of in-hospital mortality for the patients with STEMI admitted to the participating hospitals.
• Compare short and long-term CV and all-cause mortality and hospitalization.
• Determine how professional guidelines are followed in real-world situations.

Although the state program on primary percutaneous coronary intervention in ST elevated myocardial infarction, which was launched in 2015 helped to drastically decrease STEMI mortality rates, patients who had survived usually develop heart failure (HF) which leads to increased economic burden for the Armenian healthcare system.

The total duration of the study will be 24 months. The target number of the inclusion is 2500 patients. The follow-up period for enrolled patients will be 12 months.

Inclusion Criteria:

1. Adult patient (≥ 18 years of age),
2. Admitted to the participating centers for a STEMI within 48 hours of symptom onset: characterized by a rise and fall of cardiac markers (troponins) together with ST elevation in at least two contagious leads or LBBB.
3. Have given signed informed consent to participate in the study.

Non-Inclusion Criteria:

1. MI occurring ≤ 48 hours after PCI or CABG
2. The patient or the legal representative refused to sign the informed consent

Exclusion Criteria:

Withdrawal of the informed consent

The pre-screened population will consist of all patients >18 years old presenting acutely with suspected STEMI in the participating hospitals.

Only patients with confirmed diagnosis of STEMI will be included in the registry, after informed consent signing.