Relation of coronary computed tomography angiography and risk factors of coronary heart disease in asymptomatic populations / 中华健康管理学杂志

ABSTRACT

Objective To assess the relationship between coronary plaques and risk factor of coronary heart disease in a asymptomatic population.Methods A total of 604 in-patients who received coronary computerized tomography angiography (CCTA) during January 1 th,2010 and April 1 th,2011 were enrolled in this study and assigned to the non-lesion group (0),mild lesion group (0 ＜ score ≤ 5) andmoderate-severe lesion group (＞ 5) according to the third quartile of CCTA score.Clinical data including physical examination,laboratory test,ultrasound sonogram and discharge diagnoses were collected and compared between the groups.Multivariable linear regression and bivariate logistic regression were performed to find out the main risk factors of coronary heart disease.ROC curve was drawn to estimate the diagnostic value of coronary lesions.Results There were 240 individuals in the non-lesion group,271 in the mild lesion group,93 in the moderate-severe lesion group.Multivariable linear regression indicated Y =-6.56 +3.22 × mean carotid intima-media thickness (cIMT) + 1.106 × male + 0.597 × low-density lipoprotein cholesterol (LDL-C) + 0.116 × age-1.596 × high-density lipoprotein cholesterol (HDL-C).Bivariate logistic regression and ROC curve showed that mean cIMT was the main risk factor of coronary heart disease (odds ratio (OR) =7.19,ROC =0.730,P=0.00,95％ confidence interval (CI)0.68 to 0.78).Furthermore,major coronary lesions were located in the LAD (20.8％) and was soft plaque (42.5％).Conclusion In this investigation,60.2％ of the asymptomatic patients showed plaques in CCTA.Age,cIMT,LDL-C and HDL-C may be predictive to moderate to severe coronary artery lesions.