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The triglyceride paradox in the mortality of coronary artery disease.


ABSTRACT: BACKGROUND:The role of triglyceride (TG) in secondary prevention of patients with coronary artery disease (CAD) was debated. In the present study, we assessed the association between admission TG levels and long-term mortality risk in CAD patients. METHODS:A retrospective analysis was conducted from a single registered database. 3061 consecutive patients with CAD confirmed by coronary angiography were enrolled and were grouped into 3 categories by the tertiles of admission serum TG levels. The primary end point in this study was all-cause mortality and the secondary end point was cardiovascular mortality. RESULTS:The mean follow-up time was 26.9?±?13.6?months and death events occurred in 258 cases and cardiovascular death events occurred in 146 cases. Cumulative survival curves indicated that the risk of all-cause death decreased with increasing TG level (Tertile 1 vs. Tertile 2 vs. Tertile 3?=?10.3% vs. 8.6% vs. 6.3%, log rank test for overall p?=?0.001). Cox regression analysis showed an independent correlation between TG level and risk of all-cause mortality [hazard ratio (HR) 0.71, 95% confidence interval (CI) 0.58-0.86] and cardiovascular mortality (HR 0.67, 95% CI 0.51-0.89) in total patients with CAD. Subgroup analysis found the similar results in patients with acute coronary syndrome and acute myocardial infarction. CONCLUSIONS:This study found an inverse association between TG levels and mortality risk in CAD patients, which suggests that the "TG paradox" may exist in CAD patients. TRIAL REGISTRATION:ChiCTR, ChiCTR-OOC-17010433 . Registered 17 February 2017 - Retrospectively registered.

SUBMITTER: Xia TL 

PROVIDER: S-EPMC6343235 | biostudies-other | 2019 Jan

REPOSITORIES: biostudies-other

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