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Serum Total Bilirubin Levels Provide Additive Risk Information over the Framingham Risk Score for Identifying Asymptomatic Diabetic Patients at Higher Risk for Coronary Artery Stenosis
Diabetes & Metabolism Journal ; : 414-423, 2015.
Article in English | WPRIM | ID: wpr-165655
ABSTRACT

BACKGROUND:

The diagnosis of coronary artery disease (CAD) is often delayed in patients with type 2 diabetes. Serum total bilirubin levels are inversely associated with CAD. However, no studies have examined whether this can be used as a biochemical marker for identifying asymptomatic diabetic patients at higher risk for having obstructive CAD.

METHODS:

We performed a cross-sectional study of 460 consecutive asymptomatic patients with type 2 diabetes. All patients underwent coronary computed tomographic angiography, and their serum total bilirubin levels were measured. Obstructive CAD was defined as > or =50% diameter stenosis in at least one coronary artery.

RESULTS:

Serum total bilirubin tertiles showed an inverse association with the prevalence of obstructive CAD. In multivariate logistic regression analysis, the odds ratio for the highest versus the lowest tertile of total bilirubin was 0.227 (95% confidence interval [CI], 0.130 to 0.398), and an increment of 1 micromol/L in serum total bilirubin level was associated with a 14.6% decrease in obstructive CAD after adjustment for confounding variables. Receiver operating characteristic curve analysis showed that the area under the curve for the Framingham Risk Score (FRS) plus serum total bilirubin level was 0.712 (95% CI, 0.668 to 0.753), which is significantly greater than that of the FRS alone (P=0.0028).

CONCLUSION:

Serum total bilirubin level is inversely associated with obstructive CAD and provides additive risk information over the FRS. Serum total bilirubin may be helpful for identifying asymptomatic patients with type 2 diabetes who are at higher risk for obstructive CAD.
Subject(s)

Full text: Available Index: WPRIM (Western Pacific) Main subject: Bilirubin / Coronary Artery Disease / Angiography / Biomarkers / Logistic Models / Odds Ratio / Prevalence / Cross-Sectional Studies / ROC Curve / Constriction, Pathologic Type of study: Diagnostic study / Etiology study / Observational study / Prevalence study / Prognostic study / Risk factors Limits: Humans Language: English Journal: Diabetes & Metabolism Journal Year: 2015 Type: Article

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Full text: Available Index: WPRIM (Western Pacific) Main subject: Bilirubin / Coronary Artery Disease / Angiography / Biomarkers / Logistic Models / Odds Ratio / Prevalence / Cross-Sectional Studies / ROC Curve / Constriction, Pathologic Type of study: Diagnostic study / Etiology study / Observational study / Prevalence study / Prognostic study / Risk factors Limits: Humans Language: English Journal: Diabetes & Metabolism Journal Year: 2015 Type: Article