Correlation between Vitamin D Levels and Troponin in Patients Suspected of Acute Coronary Syndrome: A Cross-sectional Intensive Care Unit Study.

Introduction: Vitamin D (VD) deficiency has become a global epidemic in the past 2 decades. Cardiac troponin is a specific biomarker for detecting myocardial injury, particularly in the context of myocardial infarction (MI), where elevated levels are indicative of myocardial necrosis. This study aimed to investigate the relationship between VD levels and troponin values in patients admitted to the Intensive Care Unit under suspicion of acute coronary syndrome, including comparisons with patients ultimately not diagnosed with ACS. Materials and Methods: This cross-sectional study included a group of 69 patients who were hospitalized in the Intensive Care Unit of the Hospital under suspicion of acute coronary syndrome. The control consisted of patients without ACS. The content of VD-(25[OH]D) in blood plasma was measured by enzyme-linked immunosorbent assay during June-August 2024. Blood samples were taken in tubes with ethylenediaminetetraacetic acid anticoagulant. The tubes without anticoagulant were used for collecting blood for VD, fibrinogen, D-dimer, and lipid parameter measurement. Results: A statistically significant difference in total cholesterol levels was observed between patients with angina pectoris and those with MI (P < 0.05). Pearson correlation analysis also demonstrated a moderate negative correlation between VD levels and troponin values in patients diagnosed with MI (P < 0.05), indicating that lower VD concentrations may be associated with greater myocardial injury. Conclusions: Based on the data obtained, the medical community is inclined to believe that correction of VD deficiency has great prognostic significance. Further clinical and experimental studies are needed to study in more detail the mechanisms of the negative effects of VD deficiency on the cardiovascular system.