to compare the effects of long-term administration of oxprenolol on hypertension and hemodynamics with the effects of propranolol , 20 patients with essential hypertension were divided in a double-blind random manner into two 10-patient groups and given placebo for 2 wk , followed by equipotent doses of oxprenolol or propranolol for 5 wk and by placebo for another 2 wk .
C0020538
hypertension
C0033497
propranolol