Long-term Follow-up of Antithrombotic Management Patterns in Acute Coronary Syndrome Patients in Russia

Inclusion Criteria: * Subject must be 18 years of age or older of either gender or race * Diagnosis of STEMI, NSTEMI or UA confirmed using the following definitions Exclusion Criteria: * UA, STEMI and NSTEMI precipitated by or as a complication of surgery, trauma, or gastrointestinal (GI) bleeding or post-Percutaneous coronary intervention (PCI). * UA, STEMI and NSTEMI occurring in patients already hospitalized for other reasons. * Presence of any condition/circumstance which in the opinion of the investigator could significantly limit the complete follow up of the patient (e.g. tourist, non-native speaker or does not understand the local language, psychiatric disturbances). * Already included in the EPICOR-RUS study. * Presence of serious/severe co-morbidities in the opinion of the investigator which may limit short term (i.e. 6 month) life expectancy. * Current participation in a clinical trial.