Antihypertensive and biochemical dose-response study of tripamide. Tripamide is an experimental sulfonamide-derived diuretic antihypertensive agent. Twenty-four hospitalized patients with essential hypertension received placebo followed by 10, 25, 50, or 100 mg of tripamide daily in a randomized, double-blind design. All doses of tripamide significantly lowered standing arterial pressure. Changes in blood pressure, heart rate, and weight were not dose related, but the decrease in mean arterial pressure was significantly related to both age (P less than 0.02) and pretreatment blood pressure (P less than 0.05). Serum potassium levels were lowered significantly by the 25 and 100 mg daily doses of tripamide, whereas all doses of tripamide significantly reduced serum chloride levels and produced
Multicenter private practice comparison of tripamide and hydrochlorothiazide in the treatment of hypertension. One hundred fifty-nine patients with essential hypertension were randomly assigned to take 10 mg of tripamide or 50 mg of hydrochlorothiazide once a day for 12 weeks. Both drugs were equally effective in lowering both systolic and diastolic blood pressure in the supine (6/5 vs. 5/5 mm Hg ) and standing (8/5 vs 7/6 mm Hg) positions. Tripamide had less effect on serum potassium (0.2 vs. 0.6 mEq/L decrease) and serum uric acid (0.7 vs. 1.2 mg/dL increase) than hydrochlorothiazide. The addition of propranolol to either drug produced a further reduction in blood pressure. The overall incidence and spectrum of adverse reactions were the same for both drugs.
Effect of tripamide on glucose tolerance in patients with hypertension. The effects of tripamide and hydrochlorothiazide on blood pressure and glucose tolerance were studied in 20 hypertensive patients, half of whom had type II diabetes mellitus. Each patient underwent intravenous glucose tolerance testing before and after 4 weeks of treatment with tripamide, 10 mg, and, at a separate time , hydrochlorothiazide, 50 mg. Both tripamide and hydrochlorothiazide lowered blood pressure; for both drugs, the magnitude of the reduction in mean arterial pressure was positively correlated with the pretreatment mean arterial pressure. Hydrochlorothiazide produced a greater fall in serum potassium than did tripamide. In the nondiabetics, neither drug produced a significant change in the glucose disappearance curve