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  • Title: Comparison of cardiovascular risk and lipid profiles in patients undergoing aortic valve surgery versus those undergoing coronary artery bypass grafting.
    Author: Novaro GM, Pearce GL, Sprecher DL, Griffin BP.
    Journal: J Heart Valve Dis; 2001 Jan; 10(1):19-24. PubMed ID: 11206763.
    Abstract:
    BACKGROUND AND AIM OF THE STUDY: Hyperlipidemia is a risk factor for the progression of coronary artery disease, and possibly also valvular aortic stenosis. Thus, patients with aortic stenosis, coronary disease (or both) might be expected to have more abnormal lipid profiles than those without these two conditions. METHODS: The lipid profiles of patient subsets undergoing aortic valve replacement (AVR) with or without concomitant coronary artery bypass grafting (CABG), as well as those undergoing isolated CABG, between 1987 and 1997 were analyzed retrospectively. Four surgical groups were identified: AVR for aortic regurgitation (n = 370); AVR for predominant aortic stenosis (n = 1,072); AVR for aortic stenosis (AS) with CABG (n = 914); and isolated CABG (n = 11,156). The complete fasting lipid profiles of patients were collected, analyzed by group, and compared. RESULTS: Analysis by Spearman's correlation showed that total cholesterol levels, triglycerides and low-density lipoproteins (LDL-C) were modestly, yet significantly, increased in each successive group, while high-density lipoproteins were decreased. AS patients undergoing isolated AVR had significantly higher total cholesterol (215 versus 201 mg/dl; p <0.0001), triglycerides (125 versus 104 mg/dl; p <0.0001) and LDL-C (139 versus 132 mg/dl; p = 0.003) than those undergoing AVR for aortic regurgitation. Total cholesterol >200 mg/dl was significantly associated with AS, even after adjusting for differences in age, sex, diabetes mellitus and hypertension, with an odds ratio of 1.5 (95% confidence interval, 1.2-2.0; p = 0.001). CONCLUSION: Progressively abnormal lipid profiles are associated with AS and coronary disease in patients undergoing AVR. This evidence helps to extend the link between dyslipidemia and AS in a large consecutive series of patients.
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