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  • Title: [Antihypertensive effect of valsartan 80 mg and hydrochlorothiazide 12.5 mg evaluated by ambulatory blood pressure monitoring].
    Author: Vaïsse B, Ghobrial H, Vaur L, Poncelet P, Asmar R, Herpin D, Mallion JM.
    Journal: Arch Mal Coeur Vaiss; 2001 Aug; 94(8):907-12. PubMed ID: 11575229.
    Abstract:
    OBJECTIVE: The aim of the study was to evaluate by ambulatory blood pressure measurement (ABPM) the 24 hours antihypertensive efficacy of the fixed combination therapy, valsartan 80 mg + hydrochlorothiazide 12.5 mg (V + H), once daily, after 6 weeks of treatment, in patients with mild to moderate hypertension. STUDY DESIGN: It was a French, multicenter, double blind, randomized trial in parallel groups comparing V + H and placebo. After an initial two weeks placebo period, patients were assigned to receive either V + H or placebo for six weeks. Were eligible those with clinical arterial blood pressure, measured by sphygmomanometer, between 160/95 and 209/114 mmHg after monotherapy. A 26 hours ABPM, with Spacelabs 90,207, was done at J0 and J42 (one measurement every 15 minutes, in day time and at night). Responders were defined as a fall in day diastolic blood pressure > or = 5 mmHg and/or day diastolic blood pressure < 90 mmHg with ABPM. RESULTS: 123 of the 138 randomized patients had two interpretative measurements. Their average age was 59 + 10 years. 57% (78) of them were males and their average ABPM before treatment was 143 +/- 15/88 +/- 11 mmHg. With V + H, the reduction of the systolic and the diastolic blood pressure measured by ABPM, was significantly more important than with placebo (SBP: -15.4 +/- 10.9 mmHg versus -0.6 +/- 7.7 mmHg, p < 0.001; DBP: -9.1 +/- 7 mmHg versus -0.4 +/- 5.4 mmHg, p < 0.001). Pulse pressure (PP) was also significantly reduced with the combination therapy V + H, but it was not modified with placebo (-6.3 + 5.5 mmHg versus -0.2 + 4.1 mmHg, p < 0.001). ABPM responder rate was 73% with V + H versus 24% with placebo (p < 0.001). Trough/peak ratio was 80.3% for systolic blood pressure and 57.3% for diastolic blood pressure. The combination V + H was as well tolerated as placebo. CONCLUSION: The fixed combination V + H used for treatment of hypertension, after failure of monotherapy, is very effective in reducing pulse pressure, systolic and diastolic blood pressure, over 24 hours, homogeneously, and is as well tolerated as placebo.
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