Effects of labetalol on plasma renin, aldosterone, and catecholamines in hypertensive patients.

Abstract

We studied the effects of labetalol, an alpha- and beta-adrenoceptor antagonist, on maximum exercise heart rate and on plasma renin, aldosterone, noradrenaline, and adrenaline levels at rest and during exercise in hypertensive patients. The dose of labetalol was doubled weekly from 0.3 to 2.4 g per day. The maximum exercise heart rate fell significantly… (More)

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