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Effects of dual blockade of Renin-Angiotensin system on concentric left ventricular hypertrophy in essential hypertension: a randomized, controlled pilot study.

Abstract：

BACKGROUND:The renin-angiotensin system (RAS) plays a major role in promoting left ventricular (LV) remodeling in essential hypertension. We designed a controlled, randomized pilot study aimed to test the hypothesis that the dual RAS blockade with angiotensin-converting enzyme (ACE) inhibitor (ACEi) + angiotensin II receptor blocker (ARB) can be more effective in decreasing LV hypertrophy and improving diastolic function than a largely employed association such as ACEi + calcium-antagonist (Ca-A). METHODS:Twenty-four never-treated hypertensive patients with LV concentric hypertrophy were randomized to ramipril + candesartan or ramipril + lercanidipine. Before and after the 6-month treatment they underwent a 24-h blood pressure (BP) monitoring and echocardiographic examination. RESULTS:At baseline, age, body mass index (BMI), 24-h BP, and LV morpho-functional parameters were similar between the two groups. The 6-month treatment induced in both groups a significant decrease of 24-h BP, septal and posterior wall thickness, and LV mass index (LVMi) (ACEi + ARB 155 +/- 19 to 122 +/- 17 g/m(2), P < 0.0001; ACEi + Ca-A 146 +/- 18 to 127 +/- 20 g/m(2), P < 0.0001). Systolic function remained unchanged; LV diastolic parameters increased significantly in both groups. The extent of 24-h BP decrease was similar between the two groups (-13.3/16.3% vs. -12.3/15.8%, P = 0.63/P = 0.71), whereas the decrease of LV mass (-22% vs. -12.8%, P < 0.005) and the improvement of diastolic function were greater in ACEi + ARB group. CONCLUSIONS:In comparison with ACEi + Ca-A, ACEi + ARB treatment showed a greater antiremodeling effect, that can be reasonably ascribed to a BP-independent effect of the dual RAS blockade.

journal_name

Am J Hypertens

journal_title

American journal of hypertension

authors

Grandi AM,Solbiati F,Laurita E,Maresca AM,Nicolini E,Marchesi C,Gianni M,Guasti L,Venco A

doi

10.1038/ajh.2007.47

subject

Has Abstract

pub_date

2008-02-01 00:00:00

pages

231-7

issue

2

eissn

0895-7061

issn

1941-7225

pii

ajh200747

journal_volume

21

pub_type

杂志文章,随机对照试验

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