Abstract
BACKGROUND: Ischemic cardiomyopathy is a condition that represents myocardial dysfunction due to obstructive coronary artery disease. In ischemic cardiomyopathy, both structural and electrical remodeling occur. Myocardial biomarker, soluble ST2 (sST2) is able to predict patient's mortality and morbidity, and structural remodeling of the heart is responsible for its expression. ECG dispersion mapping (ECG-DM) as evaluated by myocardial micro-alternation index (MMI) may predict alteration of the myocardial electrophysiology with high sensitivity and specificity. The association between structural and electrical remodeling in ischemic cardiomyopathy is not fully understood. This study aims to evaluate the correlation between MMI and sST2 level in patients with ischemic cardiomyopathy. RESULT: Total patients who met for the inclusion criteria were 30 patients. Mean age was 57.97 ± 10.04 years; most patients were male (80%). 27 (90%) patients had class II NYHA functional class. The most common risk factors were smoking (20 (66,7%)) and hypertension (17 (56,7%)). Median MMI was 34.0% (IQR: 23.0-42.3%) and median sST2 was 5.6 ng/mL (IQR: 2.0-11.5 ng/mL). This study found that MMI had a significant correlation with sST2, indicating a link between structural and electrical remodeling in ischemic cardiomyopathy (r = 0.583, p < 0,05). CONCLUSION: There was a correlation between MMI and sST2 in patients with ischemic cardiomyopathy.