The triglyceride/high-density lipoprotein cholesterol ratio predicts all-cause mortality in women with suspected myocardial ischemia : A Report From the Women's Ischemia Syndrome Evaluation (WISE)

Published on Mar 1, 2009in American Heart Journal4.153
· DOI :10.1016/J.AHJ.2008.11.014
Vera Bittner90
Estimated H-index: 90
(UAB: University of Alabama at Birmingham),
B. Delia Johnson43
Estimated H-index: 43
(University of Pittsburgh)
+ 5 AuthorsGeorge Sopko96
Estimated H-index: 96
Sources
Abstract
High triglycerides (TG) and low high-density lipoprotein cholesterol (HDL-C) are important cardiovascular risk factors in women. The prognostic utility of the TG/HDL-C ratio, a marker for insulin resistance and small dense low-density lipoprotein particles, is unknown among high-risk women. Methods We studied 544 women without prior myocardial infarction or coronary revascularization, referred for clinically indicated coronary angiography and enrolled in the Women's Ischemia Syndrome Evaluation (WISE). Fasting lipid profiles and detailed demographic and clinical data were obtained at baseline. Multivariate Cox-proportional hazards models for all-cause mortality and cardiovascular events (death, myocardial infarction, heart failure, stroke) over a median follow-up of 6 years were constructed using log TG/HDL-C ratio as a predictor variable and accounting for traditional cardiovascular risk factors. Results Mean age was 57 ± 11 years; 84% were white, 55% hypertensive, 20% diabetic, 50% current or prior smokers. Triglyceride/HDL-C ranged from 0.3 to 18.4 (median 2.2, first quartile 0.35 to <1.4, fourth quartile 3.66-18.4). Deaths (n = 33) and cardiovascular events (n = 83) increased across TG/HDL-C quartiles (both P < .05 for trend). Triglyceride/HDL-C was a strong independent predictor of mortality in models adjusted for age, race, smoking, hypertension, diabetes, and angiographic coronary disease severity (hazard ratio 1.95, 95% CI 1.05-3.64, P = .04). For cardiovascular events, the multivariate hazard ratio was 1.54 (95% CI 1.05-2.22, P = .03) when adjusted for demographic and clinical variables, but became nonsignificant when angiographic results were included. Conclusion Among women with suspected ischemia, the TG/HDL-C ratio is a powerful independent predictor of all-cause mortality and cardiovascular events.
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We thank Drs Robert Adams, Gary Friday, Philip Gorelick, and Sylvia Wasserthiel-Smoller, members of Stroke Statistics Subcommittee; Drs Joe Broderick, Brian Eigel, Kimberlee Gauveau, Jane Khoury, Jerry Potts, Jane Newburger, and Kathryn Taubert; and Sean Coady and Michael Wolz for their valuable comments and contributions. We acknowledge Tim Anderson and Tom Schneider for their editorial contributions and Karen Modesitt for her administrative assistance. View this table: Writing Group Disclosure...
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