Preoperative triglycerides predict post-coronary artery bypass graft survival in diabetic patients: a sex analysis.
OBJECTIVE
Hypertriglyceridemia is commonly observed in association with diabetes. Despite cross-sectional studies and isolated longitudinal analyses in patients without coronary artery disease, the suggestion that triglyceride levels are relevant to subsequent cardiovascular events in the setting of diabetes remains controversial. This study evaluates the predictive value of serum triglyceride levels on mortality in post-coronary artery bypass graft (CABG) diabetic patients with subsequent analysis by sex.


METHODS
This longitudinal observational study involving a large metropolitan hospital consists of 1,172 diabetic post-CABG patients (792 men and 380 women) with lipid data collected between the years 1982 and 1992. Cox proportional hazards regression models were used to estimate the risk of mortality and cardiac events associated with triglyceride levels in the highest quartile (> 2.90 mmol/l for men and > 3.12 mmol/l for women).


RESULTS
Elevated preoperative serum triglyceride values in post-CABG subjects with diabetes were correlated with increased overall mortality (hazard ratio [HR] 1.26, 95% CI 1.00-1.59). The greatest influence of triglyceride levels was observed on overall (1.89, 1.30-2.73) and event-free survival (1.49, 1.06-2.08) in women. High triglyceride values were also modestly related to risk of cardiac events in diabetic men (1.28, 0.99-1.66).


CONCLUSIONS
These data suggest that increased preoperative triglyceride levels predict increased late mortality and cardiac event risk in diabetic post-CABG patients, more strongly in women than in men.
Sprecher
D L
DL
Department of Preventive Cardiology and Rehabilitation, Cleveland Clinic Foundation, Ohio 44195, USA. sprechd@ccf.org
Pearce
G L
GL
Park
E M
EM
Pashkow
F J
FJ
Hoogwerf
B J
BJ
D002784:Cholesterol / Q000097:blood; D008076:Cholesterol, HDL / Q000097:blood; D001026:Coronary Artery Bypass / Q000401:mortality; D003327:Coronary Disease / Q000097:blood / Q000601:surgery*; D003925:Diabetic Angiopathies / Q000097:blood / Q000601:surgery*; D018572:Disease-Free Survival; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008875:Middle Aged; D011237:Predictive Value of Tests; D016016:Proportional Hazards Models; D012042:Registries; D012044:Regression Analysis; D012189:Retrospective Studies; D012737:Sex Factors; D015996:Survival Rate; D013997:Time Factors; D014280:Triglycerides / Q000097:blood*
D008076:Cholesterol, HDL; D014280:Triglycerides; D002784:Cholesterol