Lesões Coronárias Frequentes e Fração de Ejeção Ventricular Esquerda em Pessoas com EAMcST: Estudo Observacional

Background: Coronary artery disease is the leading cause of death among adults, and ST-segment elevation myocardial infarction (STEMI) represents its most severe clinical manifestation. Objective: To identify the coronary arteries most frequently affected and the left ventricular ejection fraction (LVEF) values in patients with STEMI. Methodology: Observational, quantitative, retrospective study. All patients with STEMI treated at a hospital in Portugal between 2014 and 2024 were included. Results: The sample comprised 1,420 patients. The right coronary artery had the highest frequency of occlusion in 2014 (47.8%), whereas the left anterior descending artery predominated in 2015 (50.8%). The most significant variations occurred in the right coronary and left anterior descending arteries (2014-2015), whereas the obtuse marginal and posterolateral branches peaked in 2020 and 2024, respectively (p<.001). The highest proportion of severe LVEF at discharge was observed in 2019 (6.3%). Conclusion: The left anterior descending artery was the most frequently obstructed, followed by the right coronary artery. Severe and moderate LVEF values decreased at discharge.