Proposed mechanisms of propranolol's antihypertensive effect in essential hypertension

The New England Journal of Medicine
J W HollifieldD G Shand

Abstract

We studied the antihypertensive effect of propranolol alone and in combination with diuretics in 13 patients with high, 18 with normal and nine with low-renin essential hypertension whose blood-pressure response to diuretics was previously established. Propranolol (160 mg daily) significantly lowered mean arterial pressure in high-renin (129 +/- 2.6 to 114 +/- 2.1 mm Hg) and normal-renin (131 +/- 2.7 to 119 +/- 3.5 mm Hg) patients but not in low-renin patients. A positive correlation (r = 0.36, P less than 0.05) between fall in pressure and fall in plasma renin activity occurred at this dose when the whole group was considered. An antihypertensive effect occurred in both high-renin and low-renin hypertension during large-dose (320 to 960 mg daily) propranolol therapy. This effect was independent of changes in plasma renin activity. The antihypertensive effects of propranolol and diuretics were additive in normal-renin and high-renin hypertension. These data suggest that propranolol's pressure-lowering activity is due to both renin-dependent and renin-independent effects.

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Related Concepts

Diastolic Blood Pressure
Clinical Trials
Depression, Chemical
Diuretic Effect
Dose-Response Relationship, Drug
Polychemotherapy
Hypertensive Disease
Rexigen
Preprorenin

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