title: Long-term BP monitoring in the evaluation of antihypertensive therapy.
abstract: Noninvasive BP monitoring was performed in hypertensive patients before and during placebo therapy and before and during therapy with the long-acting peripheral alpha-adrenergic receptor antagonist, terazosin hydrochloride. Placebo therapy did not result in significant changes in casual BP or in averages of whole-day, daytime, or nighttime BPs. Short-term therapy with terazosin did not induce significant changes in casual supine or daytime BPs. However, whole-day BP monitoring disclosed that nighttime BPs were lower during shortterm therapy. Moreover, the circadian pattern of BP was shifted downward during terazosin therapy. Long-term therapy with terazosin resulted in significant changes in BP. All BP values were lowered significantly. The differences in the circadian BP pattern between placebo and long-term terazosin therapy show that in these patients BP was lowered throughout the 24 hours of the day. The results of the study emphasize the usefulness of 24-hour BP monitoring in the evaluation of the effectiveness of long-acting antihypertensive agents.
mesh_terms: D000328:Adult; D000368:Aged; D001794:Blood Pressure / Q000187:drug effects; D002940:Circadian Rhythm; D004341:Drug Evaluation; D006801:Humans; D006973:Hypertension / Q000188:drug therapy*; D008297:Male; D008875:Middle Aged; D010879:Piperazines / Q000627:therapeutic use*; D011224:Prazosin / Q000031:analogs & derivatives*; D013997:Time Factors
chemical_list: D010879:Piperazines; C041226:Terazosin; D011224:Prazosin