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Arzneimittelforschung 2012; 62(09): 414-419
DOI: 10.1055/s-0032-1316376
Original Article
© Georg Thieme Verlag KG Stuttgart · New York

Efficacy and Effect on Plasma B-type Natriuretic Peptide Concentration of Losartan-hydrochlorothiazide for Hypertension Uncontrolled by Losartan-based Therapy: Subanalysis of a Multicentre Prospective Observational Study

H. Meno
1   Department of Cardiology and Internal Medicine, Fukuoka Red Cross Hospital, Fukuoka, Japan
,
T. Inou
1   Department of Cardiology and Internal Medicine, Fukuoka Red Cross Hospital, Fukuoka, Japan
,
M. Tanaka
1   Department of Cardiology and Internal Medicine, Fukuoka Red Cross Hospital, Fukuoka, Japan
,
Y. Tsuchiya
2   Southern Heart Conference Study Group, Fukuoka, Japan
,
Y. Shiga
2   Southern Heart Conference Study Group, Fukuoka, Japan
,
K. Kobayashi
2   Southern Heart Conference Study Group, Fukuoka, Japan
,
Y. Nakamura
2   Southern Heart Conference Study Group, Fukuoka, Japan
,
T. Ota
2   Southern Heart Conference Study Group, Fukuoka, Japan
,
I. Kubara
2   Southern Heart Conference Study Group, Fukuoka, Japan
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Publikationsverlauf

received 27. Februar 2012

accepted 15. Juni 2012

Publikationsdatum:
06. Juli 2012 (online)

    Lizenzen und Reprints

Abstract

Many patients with hypertension have difficulty achieving their target blood pressure (BP). Therefore combination therapy, for example with an angiotensin II receptor blocker (ARB) and a diuretic, may be recommended. We previously evaluated the efficacy and safety of losartan (LOS) 50 mg – hydrochlorothiazide (HCTZ) 12.5 mg, as well as its effect on the plasma concentration of B-type natriuretic peptide (BNP, a prognostic marker for cardiovascular events), in patients with hypertension uncontrolled by ≥3 months of ARB-based therapy. The present subanalysis used data from patients who received LOS-based therapy before switching to LOS–HCTZ. Efficacy, safety, and changes in blood biochemical variables including BNP were evaluated. After excluding 4 patients with protocol violations, data from 35 patients (aged 36–79 years, mean 63 years; 66% male) were used in the safety analysis. The efficacy analysis used data from the 30 patients who were followed up for 12 months. Systolic/diastolic BP decreased from 156±12/87±11 mmHg at baseline to 125±11/73±10 mmHg at 12 months (p<0.001). After 12 months, half of the patients achieved their target BP as defined by the Japanese Society of Hypertension Guidelines for the Management of Hypertension 2004. In 12 patients with baseline plasma BNP concentration ≥20 pg/mL, BNP decreased from 78.3±18.8 pg/mL to 57.3±17.7 pg/mL (p<0.01). 3 patients experienced adverse events, one of which was cardiovascular. LOS-HCTZ is efficacious, has a good safety profile, and decreases plasma BNP concentration.

Key words

angiotensin II receptor antagonist - losartan - hydrochlorothiazide - hypertension - B-type natriuretic peptide
 

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