Regression of Electrocardiographic Signs of Left Ventricular Hypertrophy by Combined Treatment With Thiazide Diuretic and Angiotensin-II Receptor Blocker:– Randomized Multicenter Trial –

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Background:In hypertensive patients, left ventricular hypertrophy (LVH) may persist despite satisfactory blood pressure (BP) control. The efficacy of thiazide diuretics in Western countries has been reported, but whether this applies to hypertensive Japanese patients is uncertain.Methods and Results:We randomly assigned 94 patients whose BP was poorly controlled with usual doses of angiotensin-II receptor blockers (ARB), to losartan/hydrochlorothiazide (HCTZ) fixed-dose combination vs. maximum doses of ARB. After 6 months follow-up, decrease in BP, regression of electrocardiographic LVH, and changes in laboratory measurements were examined. Although a similar decrease in BP was observed in both groups, the decrease in LV Sokolow-Lyon voltage, from 34.4±9.2 to 29.4±8.8 mm in the losartan/HCTZ vs. from 29.9±10.2 to 29.1±8.4 mm in the ARB group (P=0.0003), and the decrease in serum B-type natriuretic peptide (BNP) level, from 30.1±28.5 to 26.8±28.0 pg/ml vs. from 23.7±14.8 to 29.8±29.3 pg/ml (P=0.045) were greater in the losartan/HCTZ group. By single variable logistic regression analysis, ∆BNP (P=0.012) and treatment with losartan/HCTZ (P<0.0001) correlated with the regression of LVH. By multiple variable logistic regression analysis, both ∆BNP (P=0.035) and treatment with losartan/HCTZ (P=0.0003) remained significant. No major adverse effects were observed.Conclusions:Greater regression of LVH was safely achieved with losartan/HCTZ in patients whose BP was poorly controlled with an ARB.
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Regression of Electrocardiographic Signs of Left Ventricular Hypertrophy by Combined Treatment With Thiazide Diuretic and Angiotensin-II Receptor Blocker:– Randomized Multicenter Trial –

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