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  • Title: Comparison of irbesartan vs felodipine in the regression after 1 year of left ventricular hypertrophy in hypertensive patients (the SILVER trial). Study of Irbesartan in Left VEntricular hypertrophy Regression.
    Author: Cohen A, Bregman B, Agabiti Rosei E, Williams B, Dubourg O, Clairefond P, Brudi P, Gosse P, Guéret P.
    Journal: J Hum Hypertens; 1998 Jul; 12(7):479-83. PubMed ID: 9702935.
    Abstract:
    The SILVER (Study of Irbesartan in Left VEntricular hypertrophy Regression) trial is designed to test the hypothesis that the newly developed angiontensin-II receptor antagonist, irbesartan, will produce a greater reduction in left ventricular (LV) mass than felodipine ER, in a population of hypertensive patients defined by seated diastolic blood pressure (SeDBP) in the range 95-115 mmHg or seated systolic blood pressure (SeSBP) in the range 160-200 mm Hg. A population of 360 men and women of non-childbearing potential, >18 years of age, with hypertension, newly diagnosed or after a 3-week washout from previous anti-hypertensive or vasodilator therapies, will be randomised at approximately 80-90 European sites. Add-on therapy with hydrochlorothiazide and atenolol will be allowed for blood pressure control. Patients will be studied by two-dimensional and M-mode echocardiography at baseline (central validation of LV hypertrophy), on randomisation day, and after 6 and 12 months randomised therapy. Blinded analysis of echocardiograms will be performed at a central laboratory, which will provide measurements of the LV mass index (LVMI), determined by M-mode readings according to Devereux formula and using the Penn convention. The primary end-point of the study will be the change in LVMI from baseline to 12 months. The study power is 90% to detect differences between groups from baseline of approximately 8 g/m2.
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