Correlation study on waist circumference-triglyceride (WT) index and coronary artery scores in patients with coronary heart disease

R.-F. Yang, X.-Y. Liu, Z. Lin, G. Zhang

Department of Cardiology, Second Affiliated Hospital of Kunming Medical University, Research Laboratory of Coronary Heart Diseases, Cardiovascular Disease Institute of Yunnan Province, China. zhanggema@163.com

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• Cardiology

OBJECTIVE: Coronary disease is analyzed through common lipid profiles, but these analyses fail to account for residual risk due to abdominal weight and elevated TG levels. We aimed to investigate the relationship between the waist circumference × triglyceride index (WT index) and the Coronary Artery Score (CAS) in patients with coronary heart disease.

PATIENTS AND METHODS: 346 patients in our Cardiology Department were recruited from September 2007 to August 2011 and divided into two groups according to whether the patients presented with metabolic syndrome. We performed coronary angiography using the standard Judkins method. The severity of coronary artery stenosis and the CAS were calculated and analyzed with a computerized quantitative analysis system. The signs index, which includes the body mass index (BMI), waist circumference, hip circumference, waist-hip-ratio, and waist-height-ratio, the blood glucose and blood lipid index of all the patients were collected and used to calculate the WT index (waist circumference x triglyceride index.

RESULTS: We performed a correlative analysis with age, gender, body mass index, blood glucose and blood lipid, blood pressure and other risk indicators of all patients as the dependent variables and the CAS as the independent variable. We show that the CAS is positively correlated to the WT index. Several lipid profiles and waist circumference were significantly associated with the CAS.

CONCLUSIONS: The WT index is correlated to the CAS and is a good predictor for the development of coronary artery disease; it can be applied in the clinic for early intervention in populations at risk for coronary heart disease.

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