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Amlodipine-Valsartan Combination Decreases Central Systolic Blood Pressure More Effectively Than the Amlodipine-Atenolol Combination: The EXPLOR Study

Open access
Boutouyrie, Pierre, Achouba, Assya, Trunet, Patrick, Laurent, Stéphane·2010·Hypertension

Abstract

The β-blocker atenolol is less effective than angiotensin-receptor blockers and calcium-channel blockers for reducing central blood pressure (BP). The trial was designed to determine whether the advantages of angiotensin-receptor blockers over atenolol remained significant when both were combined with the calcium-channel blocker amlodipine. A prospective, randomized, blinded endpoint (PROBE design) parallel group, multicenter trial including 393 patients with essential hypertension resistant to 4 weeks of 5 mg of amlodipine was set out. Central systolic BP, augmentation index (AIx; either rough or adjusted on heart rate), and carotid-to-femoral pulse wave velocity were measured with applanation tonometry (SphygmoCor) at inclusion and after 8 and 24 weeks of active treatment with an amlodipine-valsartan combination (5/80 mg and then 10/160 mg) or an amlodipine-atenolol combination (5/50 mg and then 10/100 mg). From baseline to week 24, central systolic BP decreased significantly more in the amlodipine-valsartan group (−13.70±1.15 mm Hg; P <0.0001) than in the amlodipine-atenolol group (−9.70±1.10 mm Hg; P <0.0001; difference: −4.00 mm Hg [95% CI: −7.10 to −0.90]; P =0.013), despite similar changes in brachial systolic BP. The difference in rough AIx reduction was −6.5% (95% CI: −8.3 to −4.7; P <0.0001) in favor of amlodipine-valsartan. AIx adjusted on heart rate was significantly reduced in favor of amlodipine-valsartan (−2.8% [95% CI: −4.92 to −0.68]; P <0.01). Heart rate decreased significantly more with amlodipine-atenolol (difference: −11 bpm [95% CI: −14 to −8 bpm]; P <0.001). Pulse wave velocity decreased by 0.95 m/s in both groups with no significant difference. Differences in central systolic BP and rough AIx remained significant after adjustment to the changes in heart rate. The amlodipine-valsartan combination decreased central (systolic and pulse) pressure and AIx more than the amlodipine-atenolol combination.

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Metadata

Authors
Boutouyrie, P., Achouba, A., Trunet, P., & Laurent, S.
Venue
Hypertension
Published
2010-06
Volume
55
Issue
6
Pages
1314-1322
ISSN
  • 0194-911X (ISSN-L)
  • 1524-4563
OpenAlex
W2125440793
Cited by
204
References
3
FWCI
11.65
Type
journal article
Language
en
Open access
bronze

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CoChat. (2026). Citation check: Amlodipine-Valsartan Combination Decreases Central Systolic Blood Pressure More Effectively Than the Amlodipine-Atenolol Combination: The EXPLOR Study. https://app.cochat.ai/papers/10.1161/hypertensionaha.109.148999
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Boutouyrie, P., Achouba, A., Trunet, P., & Laurent, S. (2010). Amlodipine-Valsartan Combination Decreases Central Systolic Blood Pressure More Effectively Than the Amlodipine-Atenolol Combination: The EXPLOR Study. Hypertension. https://doi.org/10.1161/hypertensionaha.109.148999

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