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Hypertension. 2007 Apr;49(4):792-8. Epub 2007 Feb 19.

Do statins reduce blood pressure?: a meta-analysis of randomized, controlled trials.

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  • 1Department of Clinical and Experimental Medicine, Federico II University Medical School, Naples, Italy. strazzul@unina.it

Abstract

A meta-analysis was performed of the effect of 3hydroxy3methylglutaryl-coenzyme A reductase inhibitors (statins) on blood pressure in humans including the randomized, controlled trials of statin therapy (20 trials and 828 patients) in which concomitant antihypertensive treatment (if any) remained unchanged throughout the study. A total of 291 and 272 patients were given a statin or placebo, respectively, in parallel group trials, whereas 265 took part in crossover trials receiving a statin and placebo (or probucol, in 1 trial). Systolic blood pressure was significantly lower in patients on statin than in those on placebo or control hypolipidemic drug (mean difference: -1.9 mm Hg; 95% CI: -3.8 to -0.1). The effect was greater when the analysis was restricted to studies with a baseline systolic blood pressure >130 mm Hg (Delta systolic blood pressure: -4.0; 95% CI: -5.8 to -2.2 mm Hg). There was a trend for lower diastolic blood pressure in patients receiving statin therapy compared with control: -0.9 mm Hg (95% CI: -2.0 to 0.2) overall and -1.2 mm Hg (95% CI: -2.6 to 0.1) in studies with a baseline diastolic blood pressure >80 mm Hg. In general, the higher the baseline blood pressure, the greater the effect of statins on blood pressure (P=0.066 for systolic blood pressure and P=0.023 for diastolic blood pressure). The blood pressure response to statins was unrelated to age, changes in serum cholesterol, or length of the trial. In conclusion, statin therapy has a relatively small but statistically significant and clinically meaningful effect on blood pressure.

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