title: Comparison of the combination of enalapril and a very low dose of hydrochlorothiazide with atenolol in patients with mild-to-moderate hypertension. Scandinavian Study Group.
abstract: The blood pressure lowering effect and tolerability of the angiotensin-converting enzyme inhibitor enalapril combined with a very low dose of hydrochlorothiazide (HCTZ) were compared with the selective betareceptor blocker atenolol in patients with mild-to-moderate hypertension. Three hundred seventy-four patients were randomized into a triple-blind, parallel, active-controlled 12-week study period comparing enalapril/HCTZ (20/6 mg) with atenolol (50 mg) after a 4-week placebo baseline period. Blood pressure (BP), clinical and laboratory safety, and metabolic laboratory variables were assessed. Enalapril/HCTZ as well as atenolol reduced both sitting and standing diastolic and systolic BP (P < .001), but enalapril/HCTZ had a more pronounced effect than atenolol on sitting systolic BP (P = .019); there was a trend toward more patients achieving target diastolic BP (<90 mm Hg, P = .053). No clinically important differences in safety and tolerability were observed.
authors.affiliation: Department of Medicine, Ullevaal University Hospital, Oslo, Norway.
authors.forename: I
authors.initials: I
authors.lastname: Os
authors.forename: T
authors.initials: T
authors.lastname: Hotnes
authors.forename: J
authors.initials: J
authors.lastname: Dollerup
authors.forename: C E
authors.initials: CE
authors.lastname: Mogensen
mesh_terms: D000293:Adolescent; D000319:Adrenergic beta-Antagonists / Q000008:administration & dosage / Q000009:adverse effects / Q000627:therapeutic use*; D000328:Adult; D000368:Aged; D000806:Angiotensin-Converting Enzyme Inhibitors / Q000009:adverse effects / Q000627:therapeutic use*; D000959:Antihypertensive Agents / Q000008:administration & dosage / Q000009:adverse effects / Q000627:therapeutic use*; D001262:Atenolol / Q000008:administration & dosage / Q000009:adverse effects / Q000627:therapeutic use*; D001794:Blood Pressure / Q000187:drug effects; D004232:Diuretics; D004311:Double-Blind Method; D004359:Drug Therapy, Combination; D004656:Enalapril / Q000009:adverse effects / Q000627:therapeutic use*; D005260:Female; D006801:Humans; D006852:Hydrochlorothiazide / Q000008:administration & dosage / Q000009:adverse effects / Q000627:therapeutic use*; D006973:Hypertension / Q000188:drug therapy* / Q000503:physiopathology; D008297:Male; D008875:Middle Aged; D049993:Sodium Chloride Symporter Inhibitors / Q000008:administration & dosage / Q000009:adverse effects / Q000627:therapeutic use*
chemical_list: D000319:Adrenergic beta-Antagonists; D000806:Angiotensin-Converting Enzyme Inhibitors; D000959:Antihypertensive Agents; D004232:Diuretics; D049993:Sodium Chloride Symporter Inhibitors; D006852:Hydrochlorothiazide; D001262:Atenolol; D004656:Enalapril