Abstract
Left ventricular aneurysm (LVA) is an important complication of acute myocardial infarction. This study aimed to investigate the potential predictive value of the monocyte count to high-density lipoprotein cholesterol ratio (MHR) and a composite risk score in determining the formation of LVA in patients with acute ST-segment elevation myocardial infarction (STEMI) who underwent primary percutaneous coronary intervention. We recruited 1005 consecutive patients with STEMI. Multivariable logistic regression analysis was conducted identify the independent risk factors for LVA formation. Predictive power of MHR and composite risk score for LVA formation were assessed using receiver operating characteristic curve analysis. The MHR was significantly higher among patients with LVA compared to those without LVA [6.6 (3.8-10.8) vs. 4.6 (3.3-6.3), P < 0.001]. Univariable logistic regression analysis revealed that MHR (OR = 3.866, 95% CI = 2.677-5.582, P < 0.001) was associated with the risk of LVA formation. The predictive value of MHR remained significant even after multivariate logistic regression analysis [odds ratio (OR) = 4.801, 95% confidence interval (CI) = 2.672-8.629, P < 0.001]. The discriminant power of MHR for LVA is 0.712, which is superior to both monocyte ( C statistic = 0.553) and high-density lipoprotein cholesterol ( C statistic = 0.654). The composite risk score including MHR, gender, LVEF, hemoglobin, lymphocyte and left anterior descending artery as the culprit vessel could significantly increase the predictive ability ( C statistic = 0.920). A higher MHR could effectively identify individuals at high risk of LVA formation, especially when combined with gender, LVEF, hemoglobin, lymphocyte and left anterior descending artery as the culprit vessel.
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