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  • Title: Effects of candesartan versus amlodipine on home-measured blood pressure, QT dispersion and left ventricular hypertrophy in high-risk hypertensive patients.
    Author: Matsuno Y, Minatoguchi S, Fujiwara H, GIFU Substudy Group of The Case-J Trial.
    Journal: Blood Press Suppl; 2011 Apr; 1():12-9. PubMed ID: 21247247.
    Abstract:
    The GIFU substudy of the Candesartan Antihypertensive Survival Evaluation in Japan (CASE-J) trial was conducted to compare the long-term effects of candesartan and amlodipine on office- and home-measured blood pressure (BP), QTc dispersion and left ventricular mass index (LVMI) in high-risk Japanese patients with hypertension. We used a prospective, randomized, open-label design with blinded assessment of endpoints. Patients were assigned to candesartan-based therapy up to 12 mg/day (n = 100) or amlodipine-based therapy up to 10 mg/day (n = 101) and followed for 3 years. LVMI was assessed by echocardiography and QTc dispersion was obtained from electrocardiograms. Both candesartan and amlodipine lowered and controlled office- and home-measured BP levels with no significant between-treatment differences. In patients diagnosed with left ventricular hypertrophy (LVH) at baseline, both candesartan and amlodipine significantly regressed LVMI after 3 years. However, candesartan (41.7 ± 15.1 ms at baseline vs 32.9 ± 16.6 ms after 3 years, p < 0.01), but not amlodipine (41.4 ± 13.5 ms at baseline vs 41.5 ± 16.1 ms after 3 years), produced a significant reduction in QTc dispersion. Larger studies in patients treated for longer periods are needed to determine whether this candesartan effect will translate into improved prognosis in terms of cardiovascular mortality and morbidity.
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