title: Double-blind comparison of ketanserin with placebo in patients with essential hypertension.
abstract: Two double-blind multicenter trials were performed to compare the antihypertensive action of ketanserin, at an oral dosage of 20 mg three times daily, with that of placebo over a period of four to six weeks. A subset of patients was treated in a crossover fashion for either four weeks (36 patients) or six weeks (24 patients). The patients had essential hypertension, with a diastolic blood pressure greater than or equal to 95 mmHg measured in sitting position at the end of a placebo run-in period of at least one week. In a first trial, 78 of 82 patients completed the four-week study period, where the mean drop of the systolic/diastolic blood pressure was -14/-12 mmHg in the ketanserin group (n = 32) versus -8/-5 mmHg in the placebo group (n = 46). This difference is statistically significant (p = 0.05/p less than 0.01). In 13 patients who after the initial ketanserin treatment were further treated with placebo in crossover for four weeks, the blood pressure rose slightly (+1/+3 mmHg). In the alternative group (n = 23), the blood pressure fell by -10/-7 mmHg after placebo and decreased further by -10/-8 mmHg after ketanserin. In a second trial, 24 patients completed a two by six week crossover treatment. In 12 patients assigned to the sequence placebo-ketanserin, there was a drop of the systolic/diastolic blood pressure by -7/-4 mmHg after placebo and an additional drop by -26/-10 mmHg after ketanserin.(ABSTRACT TRUNCATED AT 250 WORDS)
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001794:Blood Pressure / Q000187:drug effects; D002986:Clinical Trials as Topic; D004311:Double-Blind Method; D005260:Female; D006801:Humans; D006973:Hypertension / Q000188:drug therapy*; D007650:Ketanserin / Q000627:therapeutic use*; D008297:Male; D008875:Middle Aged; D011897:Random Allocation
chemical_list: D007650:Ketanserin