4.5 Article

Relationship between the triglyceride-glucose index and coronary artery calcification in asymptomatic, non-diabetic patients undergoing maintenance hemodialysis

Journal

RENAL FAILURE
Volume 45, Issue 1, Pages -

Publisher

TAYLOR & FRANCIS LTD
DOI: 10.1080/0886022X.2023.2200849

Keywords

Triglyceride-glucose index; cardiovascular disease; coronary artery calcification; non-diabetic; maintenance hemodialysis

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In this study, the relationship between the TyG index and CAC in asymptomatic non-diabetic patients undergoing MHD was investigated. The results showed that the TyG index was independently associated with the presence of CAC and could be used to predict CAC in asymptomatic non-diabetic patients undergoing MHD.
Objective Coronary artery calcification (CAC) is positively and independently associated with cardiovascular disease (CVD) in patients undergoing maintenance hemodialysis (MHD). Insulin resistance is independently associated with CAC and is an important risk factor for CVD. The triglyceride-glucose (TyG) index is a reliable biomarker of insulin resistance. This cross-sectional, observational study aimed to investigate the relationship between the TyG index and CAC in asymptomatic non-diabetic patients undergoing MHD. Methods The quantitative coronary artery calcification score (CACS) was calculated and expressed using the Agatston score. The TyG index was calculated as ln [fasting triglyceride (mg/dL) x fasting glucose (mg/dL)/2]. Multiple Poisson regression analysis, Spearman correlation analysis, and receiver operating characteristic (ROC) curves were used to investigate the relationship between the TyG index and CAC. Results The 151 patients were divided into three groups according to the tertiles of the TyG index. With an increase in the TyG index, the CACS significantly increased (Spearman's rho = 0.414, p < 0.001). Poisson regression analysis indicated that the TyG index was independently related to the presence of CAC (prevalence ratio, 1.281 [95% confidence interval, 1.121-1.465], p < 0.001). Furthermore, ROC curve analysis showed that the TyG index was of value in predicting the CAC in asymptomatic non-diabetic patients undergoing MHD, with an area under the curve of 0.667 (p = 0.010). Conclusion The TyG index is independently related to the presence of CAC in asymptomatic, non-diabetic patients undergoing MHD.

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