EFFECTS OF TRANDOLAPRIL ON 24-H AMBULATORY BLOOD-PRESSURE IN PATIENTS WITH MILD-TO-MODERATE ESSENTIAL-HYPERTENSION

The effects of trandolapril on 24-h blood pressure in mild-to-moderate hypertensive patients of both sexes were investigated by conventional (clinic) and ambulatory recording in a double-blind study at two dosages, 1 mg (n = 14) and 2 mg (n = 13) once daily for 2 weeks. Both methods of measurement showed significant end-of-treatment decreases (p < 0.01 in all cases) in diastolic and systolic pressure in the 1- and 2-mg groups. Although intergroup differences were not significant, inspection of the mean changes from baseline in the eight 3-h periods constituting the 24-h profile showed that reductions were consistently greater in the 2-mg than in the l-mg group, by 2 mm Mg diastolic blood pressure and 6 mm Mg systolic blood pressure. Values in the last segment of the placebo washout (46-48 h after the last active dose) showed that these reductions were well maintained, notably in the 2-mg group, with a minimal tendency to drift toward pretreatment levels. No effect was observed on the normal circadian blood pressure rhythm. Both doses were well tolerated. In conclusion, trandolapril is an effective, well tolerated antihypertensive agent for once-daily dosing at either 1 or 2 mg.