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  • Title: Clinic and ambulatory blood pressure lowering effect of aliskiren/amlodipine/hydrochlorothiazide combination in patients with moderate-to-severe hypertension: a randomized active-controlled trial.
    Author: Lacourcière Y, Taddei S, Konis G, Fang H, Severin T, Zhang J.
    Journal: J Hypertens; 2012 Oct; 30(10):2047-55. PubMed ID: 22828090.
    Abstract:
    OBJECTIVES: To evaluate the clinic and ambulatory blood pressure (BP)-lowering efficacy and safety of an aliskiren/amlodipine/hydrochlorothiazide (HCT) triple combination compared with the component dual combinations, in patients with moderate-to-severe hypertension. METHODS: This 8-week, double-blind, randomized, active-controlled study, after 1-4 weeks single-blind placebo run-in period, randomized 1191 patients to receive once-daily aliskiren/amlodipine 150/5 mg (n = 287), aliskiren/HCT 150/12.5 mg (n = 298), amlodipine/HCT 5/12.5 mg (n = 296), or aliskiren/amlodipine/HCT 150/5/12.5 mg (up-titrated from aliskiren/HCT 150/12.5 mg after initial 3 days) (n = 310) for 4 weeks, followed by forced titration to double the initial dose for the next 4 weeks. RESULTS: Baseline mean sitting SBP and DBP (msSBP/msDBP) was comparable among treatment groups. The aliskiren/amlodipine/HCT combination resulted in significant least squares mean reduction in msSBP/msDBP from baseline to endpoints (week 4, -30.7/-15.9  mmHg; week 8, -37.9/-20.6  mmHg), superior (P < 0.001) to each of the dual combinations. The triple combination was associated with -27.8  mmHg reduction in msSBP at week 2, significantly better than the dual combinations (P < 0.05). Significantly greater mean SBP/DBP-lowering effect for triple vs. dual combinations was also demonstrated through 24-h, daytime, and night-time ambulatory BP measurements. Significantly greater (P < 0.001) BP control (msSBP/msDBP < 140/90  mmHg) was achieved with triple combination in patients with moderate-to-severe (62.3%) and severe (57.5%) hypertension. CONCLUSION: Aliskiren/amlodipine/HCT at 150/5/12.5 mg (week 4) and 300/10/25 mg (week 8) provided statistically superior reductions in msSBP/msDBP and greater BP control rates vs. the dual combinations, and was well tolerated. The improved efficacy of BP reduction was evident within 2 weeks of initiating triple therapy even at low dose.
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