Abstract
High dose (40 mg) olmesartan medoxomil (OM) blocks the angiotensin II receptor, significantly reducing blood pressure (BP). Adding hydrochlorothiazide (HCTZ) to OM increases efficacy, but has not been evaluated in patients inadequately controlled by OM 40 mg. Patients with grade 2 and grade 3 hypertension with inadequately controlled BP (seated diastolic blood pressure [SeDBP] 90–115 mm Hg and seated systolic blood pressure [SeSBP] 140–180 mm Hg, plus ambulatory BP criteria) after 8 weeks of OM 40 mg open-label treatment were randomized to 8 weeks of double-blind treatment with OM/HCTZ 40/25 (n=140), 40/12.5 (n=278), 20/12.5 mg (n=280) or OM 40 mg (n=274). Treatment with OM/HCTZ 40/25 mg and 40/12.5 mg significantly reduced SeDBP (−5.3 and −3.4 mm Hg, respectively), and SeSBP (−7.4 and −5.2 mm Hg, respectively), vs OM 40 mg monotherapy (P<0.0001 for each) in patients inadequately controlled on OM 40 mg alone. OM/HCTZ 40/12.5 mg reduced SeSBP significantly more than OM/HCTZ 20/12.5 mg (−2.6 mm Hg, P=0.0255), and also produced a further reduction in SeDBP vs the lower dose. All treatments were well tolerated, with similar low proportions of patients reporting treatment-emergent adverse events in all treatment groups. In conclusion, adding HCTZ to OM 40 mg significantly improves BP reductions and target BP rates in harder-to-treat patients and a clear dose-response was observed for efficacy.
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Acknowledgements
The authors gratefully acknowledge the efforts of all of the investigators who participated in this study. This study was sponsored by Daiichi Sankyo Europe GmbH. We also thank Dr Phil Jones of in Science Communications who provided medical writing support funded by Daiichi Sankyo Europe GmbH.
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LCR has received honoraria from Daiichi Sankyo for talks and consultancy.
XG, in the past 3 years has been paid speakers's fees or travel costs by BMS, Boehringer Ingelheim, Daiichi Sankyo, Ipsen, Novartis, Pfizer, Sanofi Aventis and Takeda. XG has been paid consulting fees by Novartis, Daiichi Sankyo and Boehringer Ingelheim.
LS: no conflicts of interest.
JS: no conflicts of interest.
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Rump, L., Girerd, X., Sellin, L. et al. Effects of high dose olmesartan medoxomil plus hydrochlorothiazide on blood pressure control in patients with grade 2 and grade 3 hypertension. J Hum Hypertens 25, 565–574 (2011). https://doi.org/10.1038/jhh.2010.105
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DOI: https://doi.org/10.1038/jhh.2010.105
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