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COMPARATIVE STUDY
JOURNAL ARTICLE
MULTICENTER STUDY
Influence of Age and Race on 24-Hour Ambulatory Blood Pressure Responses to Valsartan, Hydrochlorothiazide, and Their Combination: Implications for Clinical Practice.
Journal of Clinical Hypertension 2017 Februrary
The effects of race and age on 24-hour mean ambulatory systolic blood pressure (maSBP) responses to sequential 4-week periods of angiotensin receptor blocker therapy (valsartan [VAL] 160 mg/d then 320 mg/d and combination VAL/hydrochlorothiazide [HCTZ] 320/12.5 mg/d) were compared in 304 patients with stage 1 or 2 hypertension. There were lesser blood pressure (BP) responses from baseline with VAL monotherapy in black than Caucasian patients (-2.9 and -4.0 mm Hg vs -8.2 and -9.3 mm Hg, respectively; P<.001 each) but VAL/HCTZ BP responses were similar in both groups (-12 vs -15 mm Hg). Participants 65 years and older had lower BP responses with VAL 160 mg/d and 320 mg/d than those younger than 65 years (-2.8 and -4.5 mm Hg vs -6.5 and -7.5 mm Hg, respectively; P<.001) but similar responses to VAL/HCTZ (-14 vs -17 mm Hg). No BP response differences were found between those older than and those younger than 55 years. The authors conclude that: (1) adding low-dose HCTZ (12.5 mg daily) to VAL is more effective than VAL titration, irrespective of age or race, (2) VAL BP efficacy is lower in blacks than Caucasians, and (3) ARB responses are diminished in patients older than 65 years. Guidelines for stage 1 or 2 hypertension that suggest age 55 should determine initial monotherapy choice (eg, ARB vs thiazide diuretic) or that fail to recommend initial ARB-thiazide combination therapy should be reconsidered.
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