alexa Impact of statin therapy on central aortic pressures and hemodynamics: principal results of the Conduit Artery Function Evaluation-Lipid-Lowering Arm (CAFE-LLA) Study.
Cardiology

Cardiology

Journal of Clinical & Experimental Cardiology

Author(s): Williams B, Lacy PS, Cruickshank JK, Collier D, Hughes AD,

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Abstract BACKGROUND: Statins reduce the risk of cardiovascular events in people with hypertension. This benefit could arise from a beneficial effect of statins on central aortic pressures and hemodynamics. The Conduit Artery Function Evaluation-Lipid-Lowering Arm (CAFE-LLA) study, an Anglo-Scandinavian Cardiac Outcomes Trial (ASCOT) substudy, investigated this hypothesis in a prospective placebo-controlled study of treated patients with hypertension. METHODS AND RESULTS: CAFE-LLA recruited 891 patients randomized to atorvastatin 10 mg/d or placebo from 5 centers in the United Kingdom and Ireland. Radial artery applanation tonometry and pulse-wave analysis were used to derive central aortic pressures and hemodynamic indices at repeated visits over 3.5 years of follow-up. Atorvastatin lowered low-density lipoprotein cholesterol by 32.4 mg/dL (95\% confidence interval [CI], 28.6 to 36.3) and total cholesterol by 35.1 mg/dL (95\% confidence interval, 30.9 to 39.4) relative to placebo. Time-averaged brachial blood pressure was similar in CAFE-LLA patients randomized to atorvastatin or placebo (change in brachial systolic blood pressure, -0.1 mm Hg [95\% CI, -1.8 to 1.6], P=0.9; change in brachial pulse pressure, -0.02 mm Hg [95\% CI, -1.6 to 1.6], P=0.9). Atorvastatin did not influence central aortic pressures (change in aortic systolic blood pressure, -0.5 mm Hg [95\% CI, -2.3 to 1.2], P=0.5; change in aortic pulse pressure, -0.4 mm Hg [95\% CI, -1.9 to 1.0], P=0.6) and had no influence on augmentation index (change in augmentation index, -0.4\%; 95\% CI, -1.7 to 0.8; P=0.5) or heart rate (change in heart rate, 0.25 bpm; 95\% CI, -1.3 to 1.8; P=0.7) compared with placebo. The effect of statin or placebo therapy was not modified by the blood pressure-lowering treatment strategy in the factorial design. CONCLUSIONS: Statin therapy sufficient to significantly reduce cardiovascular events in treated hypertensive patients in ASCOT did not influence central aortic blood pressure or hemodynamics in a large representative cohort of ASCOT patients in CAFE-LLA. This article was published in Circulation and referenced in Journal of Clinical & Experimental Cardiology

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