title: A clinical trial evaluating the 24-hour effects of bisoprolol/hydrochlorothiazide 5 mg/6.25 mg combination in patients with mild to moderate hypertension.
abstract: This study used 24-h ambulatory blood pressure (BP) monitoring to investigate the effectiveness of a novel low-dose combination of bisoprolol/hydrochlorothiazide in adult patients with mild to moderate essential hypertension. Thirty-six patients with stable mild to moderate hypertension (sitting diastolic BP 95-114 mmHg) after a placebo run-in phase received oral bisoprolol/hydrochlorothiazide 5 mg/6.25 mg once daily for 4 weeks in a single-blind regimen. At office visits, BP and pulse were measured with statistically significant reductions (p < 0.01) recorded after 2 and 4 weeks of treatment. Twenty-four-h ambulatory BP monitoring at the completion of therapy revealed significant reductions (p < 0.01) in both systolic and diastolic 24-h, daytime, and nighttime BP, compared with the end of the placebo treatment phase. Systolic and diastolic load were also reduced (p < 0.01). The combination was well tolerated, and overall quality-of-life questionnaire scores indicated an improvement after bisoprolol/hydrochlorothiazide therapy (p = 0.02). No clinically significant changes from baseline in laboratory parameters were observed; in particular, serum potassium was unchanged. This is the first study to demonstrate the 24-h effectiveness of the bisoprolol/hydrochlorothiazide 5 mg/6.25 mg combination, using 24-h ambulatory BP monitoring. In addition, antihypertensive therapy with low doses of bisoprolol/hydrochlorothiazide in combination may improve tolerability.
authors.affiliation: National Research Institute, Los Angeles, California 90069.
authors.forename: A J
authors.initials: AJ
authors.lastname: Lewin
authors.forename: M C
authors.initials: MC
authors.lastname: Lueg
authors.forename: S
authors.initials: S
authors.lastname: Targum
authors.forename: P
authors.initials: P
authors.lastname: Cardenas
mesh_terms: D017298:Bisoprolol / Q000008:administration & dosage* / Q000627:therapeutic use; D015924:Blood Pressure Monitors; D004338:Drug Combinations; D005260:Female; D006439:Hemodynamics / Q000187:drug effects; D006801:Humans; D006852:Hydrochlorothiazide / Q000008:administration & dosage* / Q000627:therapeutic use; D006973:Hypertension / Q000188:drug therapy* / Q000523:psychology; D008297:Male; D008875:Middle Aged; D011788:Quality of Life; D016037:Single-Blind Method; D013997:Time Factors
chemical_list: D004338:Drug Combinations; D006852:Hydrochlorothiazide; D017298:Bisoprolol