on July 11, 2005
Published online before print July 11, 2005, doi: 10.1161/CIRCULATIONAHA.104.512681
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Submitted on October 6, 2004
From Tulane University School of Medicine (P.R.), New Orleans, La; Rush-Presbyterian-St. Luke’s Medical Center (M.D.), Chicago, Ill; EBT Research Foundation (T.Q.C.), Hendersonville, Tenn; Harvard Medical School (F.K.W.), Boston, Mass; University of Medicine and Dentistry of New Jersey (G.A.B.), Robert Wood Johnson Medical School, New Brunswick, NJ; Beth Israel Medical Center and Continuum Heart Institute (H.H.), New York, NY; and The Ohio State University (J.A.R.), Columbus, Ohio. * To whom correspondence should be addressed. E-mail: praggi{at}tulane.edu.
Background--Women have been underrepresented in statin trials, and few data exist on the effectiveness and safety of statins in this gender. We used sequential electron-beam tomography (EBT) scanning to quantify changes in coronary artery calcium (CAC) as a measure of atherosclerosis burden in patients treated with statins. Methods and Results--In a double-blind, multicenter trial, we randomized 615 hyperlipidemic, postmenopausal women to intensive (atorvastatin 80 mg/d) and moderate (pravastatin 40 mg/d) lipid-lowering therapy. Patients also submitted to 2 EBT scans at a 12-month interval (mean interval 344±55 days) to measure percent change in total and single-artery calcium volume score (CVS) from baseline. Of the 615 randomized women, 475 completed the study. Mean±SD percent LDL reductions were 46.6%±19.9% and 24.5%±18.5 in the intensive and moderate treatment arms, respectively (P<0.0001), and National Cholesterol Education Program Adult Treatment Panel III LDL goal was reached in 85.3% and 58.8% of women, respectively (P<0.0001). The total CVS% change was similar in the 2 treatment groups (median 15.1% and 14.3%, respectively; P=NS), and single-artery CVS% changes and absolute changes were also similar (P=NS). In both arms, there was a trend toward a greater CVS progression in patients with prior cardiovascular disease, diabetes mellitus, and hypertension, whereas hormone replacement therapy had no effect on progression. Conclusions--In postmenopausal women, intensive statin therapy for 1 year caused a greater LDL reduction than moderate therapy but did not result in less progression of coronary calcification. The limitations of this study (too short a follow-up period and the absence of a placebo group) precluded determination of whether progression of CVS was slowed in both arms or neither arm compared with the natural history of the disease.
Revised on April 9, 2005
Accepted on April 13, 2005
Aggressive Versus Moderate Lipid-Lowering Therapy in Hypercholesterolemic Postmenopausal Women. Beyond Endorsed Lipid Lowering With EBT Scanning (BELLES)
Paolo Raggi MD*,
Key words: calcium • imaging • lipids • women
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