Levels of BNP and stress blood glucose in acute coronary syndrome patients and their relationships with the severity of coronary artery lesion.

This study aims to analyze the clinical significance of the measuring B-type natriuretic peptide (BNP) and stress glycemia in patients with acute coronary syndrome (ACS), and to investigate the relationships between the two biomarkers and the severity of coronary artery lesions. One hundred and five consecutive patients with ACS admitted for coronary artery angiography were divided into three clinical subgroups. These patients were then further assigned into either of three subgroups according to their Gensini score. Moreover, a group of patients with stable angina (SA) and those with no history of coronary disease served as controls. The patients' BNP levels were analyzed on admission and their fasting blood glucose was measured the next morning. BNP and fasting blood glucose concentrations were highly elevated in patients with ACS irrespective of their subgroups compared to SA and control patients. This observation was statistically significant (P < 0.001). Further, the concentrations of BNP and fasting blood glucose between the three ACS subgroups were significantly different (P < 0.001) depending on the severity of the coronary artery disease. There is a positive correlation between levels of BNP and blood glucose concentration and Gensini score in ACS patients (r = 0.782, P < 0.05, r = 0.732, P < 0.05). BNP level and stress glycemia were significantly higher in ACS patients than those in SA and control groups. There is a correlation between BNP level and stress blood glucose concentration and the severity of coronary artery lesions. Combined analysis of BNP and stress blood glucose can be helpful and effective for risk stratification of patients with ACS after admission.