Efficacy of Combination Therapy With Amlodipine Besylate/Benazepril Hydrochloride for Lowering Systolic Blood Pressure in Stage 2 Hypertension

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The Systolic Evaluation of Lotrel Efficacy and Comparative Therapies (SELECT) study compared daily treatment with combination amlodipine besylate/benazepril hydrochloride 5/20 mg, amlodipine besylate 5 mg, and benazepril hydrochloride 20 mg in 505 patients aged 55 years of age or older with stage 2 hypertension (systolic blood pressure [BP] ≥160 and ≤200 mm Hg and diastolic BP ≥60 and ≥100 mm Hg). BP and pulse pressure were assessed by conventional office BP measurements and 24-hour ambulatory BP monitoring. In this analysis, combination therapy was associated with significantly greater reductions in mean 24-hour BP, pulse pressure, and mean ambulatory BP during various time intervals compared with either monotherapy in the intent-to-treat population, in those with isolated and predominantly systolic hypertension, and in dippers and nondippers. Adverse event rates were low and similar in all treatment groups. This study demonstrated that combination therapy is superior to monotherapy in older patients with stage 2 systolic hypertension and is well tolerated.

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