blood pressure , heart rate , plasma renin activity , plasma norepinephrine and plasma epinephrine were determined in 11 patients with essential hypertension at rest before and 15 , 30 , 45 , and 60 minutes after an intravenous infusion of 0.12 mg./kg . propranolol given over five minutes .
C0028351
norepinephrine
C0014563
epinephrine