Why the study?
Does the addition of a beta-blocker to thiazide therapy reduce angiotensin II-dependent blood pressure and suppress the renin-angiotensin system in patients with essential hypertension?
Population
16 patients, median age 41 years, with essential hypertension insufficiently controlled by…
Comparison
Addition of a beta-adrenoreceptor blocker for 3… vs Baseline (hydrochlorothiazide 75 mg/day alone).
Design
Cohort
Follow-up
3 months
Authors
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Supports adjunctive beta-blocker use with thiazides to suppress RAS; extends mechanistic observations but remains hypothesis-generating.
Does the addition of a beta-blocker to thiazide therapy reduce angiotensin II-dependent blood pressure and suppress the renin-angiotensin system in patients with essential hypertension?
The addition of a beta-blocker to thiazide therapy suppresses the thiazide-induced stimulation of the renin-angiotensin system and eliminates the angiotensin II-dependence of blood pressure, contributing to its antihypertensive effect.
Ibsen et al. (1979) studied this question.
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