Serum sodium levels in patients with ST-segment elevation myocardial infarction: Its effects on in-hospital and long-term clinical outcomes

Introduction: There are some conflicting results in the association of serum sodium level with clinical outcomes in patients with acute myocardial infarction.The aim of this study was to investigate the effect of serum sodium levels on in-hospital and long-term outcomes in patients with ST-segment elevation myocardial infarction (STEMI). Patients and Methods:A total of 1840 patients with STEMI (mean age 57.3 ± 11.8; men 79.7%) who underwent primary percutaneous coronary intervention were included to the study.Baseline characteristics and outcomes were compared among the patients by admission serum sodium level and categorized accordingly; Q1, Q2, Q3 and Q4.Results: There was not a significant difference regarding in-hospital mortality, cardiogenic shock, ventricular arrhythmia, acute kidney injury and major adverse cardiac events.Furthermore, after a follow-up period of 3-years; there was not a significant difference regarding long-term mortality and major adverse cardiac events. Conclusion:In this large-scale study, we did not observe a significant association of serum sodium level with in-hospital and long-term clinical outcomes in patients with STEMI.