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Persistent olmesartan-based blood pressure-lowering effects on morning hypertension in Asians: the HONEST study.

ABSTRACT: Using data from the large-scale HONEST (Home blood pressure measurement with Olmesartan Naive patients to Establish Standard Target blood pressure) study, we investigated the characteristics of the effects of olmesartan-based treatment on morning hypertension in Asian hypertensive patients. Specifically, we investigated the relationship between baseline blood pressure (BP) and BP reduction after 16 weeks by linear regression analyses; determinants of BP reduction were also investigated. For both morning home BP (MHBP) and clinic BP (CBP), reduced systolic BP (SBP) after 16 weeks was associated with baseline SBP (P<0.001). The slope of the regression lines was similar for morning home SBP (MHSBP) (-0.744) and clinic SBP (-0.735). Although sex, concomitant diabetes mellitus and concomitant hepatic disease significantly influence the relationship between BP reduction and baseline BP for MHSBP, none were deemed clinically relevant. In conclusion, olmesartan-based treatment robustly reduced baseline high MHBP, similar to CBP, and the effect was associated with baseline BP but unaffected by patient background factors.

SUBMITTER: Kario K

PROVIDER: S-EPMC4865473 | biostudies-literature | 2016 May

REPOSITORIES: biostudies-literature

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Persistent olmesartan-based blood pressure-lowering effects on morning hypertension in Asians: the HONEST study.

Kario Kazuomi K Saito Ikuo I Kushiro Toshio T Teramukai Satoshi S Yaginuma Mai M Mori Yoshihiro Y Okuda Yasuyuki Y Kobayashi Fumiaki F Shimada Kazuyuki K

Hypertension research : official journal of the Japanese Society of Hypertension 20160107 5

Using data from the large-scale HONEST (Home blood pressure measurement with Olmesartan Naive patients to Establish Standard Target blood pressure) study, we investigated the characteristics of the effects of olmesartan-based treatment on morning hypertension in Asian hypertensive patients. Specifically, we investigated the relationship between baseline blood pressure (BP) and BP reduction after 16 weeks by linear regression analyses; determinants of BP reduction were also investigated. For both ...[more]

PMID: 26739871

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Project description:BackgroundTriamterene, because of its potassium-sparing properties, is frequently used in combination with hydrochlorothiazide (HCTZ) to treat patients with hypertension. By inhibiting the epithelial sodium channel (ENaC) in the cortical collecting duct, triamterene reduces potassium secretion, thus reducing the risk of hypokalemia. Whether triamterene has an independent effect on blood pressure (BP) has not been well studied.ObjectiveTo determine if triamterene provides an effect to further lower BP in patients treated with HCTZ.DesignWe conducted an observational study using electronic medical record data from the Indiana Network for Patient Care. Participants were 17,291 patients with the diagnosis of hypertension between 2004 and 2012.Main measuresBP was the primary outcome. We compared the BP between patients who were taking HCTZ, with and without triamterene, either alone or in combination with other antihypertensive medications, by using a propensity score analysis. For each medication combination, we estimated the propensity score (i.e., probability) of a patient receiving triamterene using a logistic regression model. Patients with similar propensity scores were stratified into subclasses and BP was compared between those taking triamterene or not within each subclass; the effect of triamterene was then assessed by combining BP differences estimated from all subclasses.Key resultsThe mean systolic BP in the triamterene + HCTZ group was 3.8 mmHg lower than in the HCTZ only group (p?<?0.0001); systolic BP was similarly lower for patients taking triamterene with other medication combinations. Systolic BP reduction was consistently observed for different medication combinations. The range of systolic BP reduction was between 1 and 4 mm Hg, depending on the concurrently used medications.ConclusionsIn the present study, triamterene was found to enhance the effect of HCTZ to lower BP. In addition to its potassium-sparing action, triamterene's ability to lower BP should also be considered.

Dataset Information

Persistent olmesartan-based blood pressure-lowering effects on morning hypertension in Asians: the HONEST study.

Publications

Persistent olmesartan-based blood pressure-lowering effects on morning hypertension in Asians: the HONEST study.

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