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  • Title: Combination therapy with losartan/hydrochlorothiazide for blood pressure reduction and goal attainment in a real-world clinical setting in Japan.
    Author: Suzuki H, Shimada Y, Fujiwara K.
    Journal: Ther Adv Cardiovasc Dis; 2012 Dec; 6(6):237-44. PubMed ID: 23129531.
    Abstract:
    OBJECTIVE: When physicians prescribe a new antihypertensive drug, they do not know the extent of the drug's effect on lowering blood pressure. To resolve this dilemma, a Web-based program was constructed for real-time entry and analysis of treatment. This observational study evaluated the efficacy of losartan/hydrochlorothiazide (Lo/HCTZ) in lowering blood pressure (BP) and achieving BP target values. METHODS: Physicians prescribed Lo/HCTZ for patients with hypertension who failed to achieve target BP values of < 140/90 mmHg and < 130/80 mmHg in patients with diabetes or chronic kidney disease, respectively, with antihypertensive drugs including an angiotensin receptor blocker. RESULTS: From December 2006 to December 2009, the data of 88,254 patients were entered into this database, and the data of 24,825 subjects were analyzed. At the first visit, a total of 88,254 patients received a first prescription of Lo/HCTZ daily. Among these, at the end of the present analysis, 24,825 (28%) outpatients had a follow-up visit at 1 month and 20,726 (23%) outpatients had a follow-up visit at 6 months. The prevalence of hypertensive patients achieving systolic blood pressure (SBP) control (< 140 mmHg) increased over time from 6.9% to 54.3% in females and 6.1% to 52.3% in males (p < 0.05). At the start of the study, the levels of SBP were significantly highest in the eldest patients (≥ 75 years) followed by the group of 65-75 years and lowest in the youngest patients (≤ 64 years). However, at the end of the study, there were no differences in levels of SBP among the three groups. CONCLUSIONS: This Web-based system may provide useful information when a new drug is first released into the market. Treatment with Lo/HCTZ enabled a substantial proportion of hypertensive patients to achieve the recommended goal of < 140/90 mmHg.
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