Introduction: The main treatment for ST-elevation myocardial infarction (STEMI) is the re-establishment of the coronary flow of infarct-related arteries. However, 50% of cases present multivessel disease (MVD), negatively affecting mortality. Complete revascularization (CR) is currently advocated since it reduces major adverse cardiovascular events (MACE).
Objective: Evaluation of the adopted revascularization strategy and its prognostic value in a Portuguese cohort of STEMI patients with MVD.
Material and methods: Retrospective analysis of patients admitted with STEMI included in the Portuguese Registry of Acute Coronary Syndromes between 2010 and 2019. Patients were divided in two groups regarding revascularization strategy (complete versus incomplete) and compared. Independent predictors of a composite of all-cause mortality and rehospitalization for cardiovascular causes were assessed by multivariate logistic regression.
Results: A total of 3500 patients were included. A CR strategy was performed in 21.8% of patients, who were younger and healthier. They also presented more hemodynamically stable and had less kidney dysfunction and anaemia. Their coronary anatomy was less complex, with a higher prevalence of 2-vessel and a lower proportion of chronic occlusions. In-hospital and 1-year adverse events were less frequent between patients with CR.
Conclusion: In hemodynamically stable STEMI patients, CR substantially reduced in-hospital and 1-year all-cause mortality and MACE.
Keywords: STEMI; complete revascularization; multivessel disease; prognosis.