Clinical Characteristics and Outcomes of ST-Elevation Myocardial Infarction in Young Patients: A Single-Center Experience.

Objective This study aimed to examine the clinical characteristics, risk factors, and outcomes of patients aged ≤45 years with ST-segment elevation myocardial infarction (STEMI) treated with primary percutaneous coronary intervention (pPCI). Methods From January 2018 to March 2020, this retrospective observational study took place at a tertiary cardiac center in Bahrain. We included patients aged ≤45 years who were admitted with STEMI and had primary percutaneous coronary intervention (pPCI). Results In this study, 510 patients with STEMI receiving pPCI were included, of whom 95 (18%) were younger than 45 years. The young age group had more smokers (57.9% vs. 40.5%, p = 0.003), newly diagnosed dyslipidemia (41.1% vs. 25.5%, p = 0.004), and a positive family history of early coronary artery disease (CAD) (14.7% vs. 4.3%, p = <0.001). Traditional cardiovascular risk factors, such as diabetes mellitus, systemic hypertension, and dyslipidemia, were significantly less common in young patients. Major adverse cardiovascular and cerebrovascular events (MACCE) were also significantly less common in young patients at the one-year follow-up (2.1 vs. 8.4%, p = 0.05). Conclusion Young patients with STEMI are more often smokers with undiagnosed dyslipidemia and have a family history of CAD. MACCE at one year is significantly lower as compared to older patients, but it is not negligible. Public health efforts are needed to reduce the prevalence of modifiable risk factors among the susceptible population.