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  • Title: Long-term double-blind comparison of doxazosin and atenolol in patients with mild to moderate hypertension.
    Author: Lijnen P, Fagard R, Staessen J, Lissens W, Amery A.
    Journal: J Cardiovasc Pharmacol; 1989 Aug; 14(2):319-25. PubMed ID: 2476608.
    Abstract:
    The antihypertensive effect and safety of doxazosin once daily as well as the effect on serum lipids was compared with that of atenolol once daily in 40 patients with mild to moderate hypertension. During the first 4 weeks, all patients received placebo therapy. During the subsequent 46 weeks, patients were randomized to doxazosin or atenolol treatment. Treatment was initiated with 1 mg doxazosin or 50 mg atenolol once daily. The dose could be doubled biweekly for 10 weeks until a final dose of 16 mg doxazosin or 100 mg atenolol was reached. The patients then entered the maintenance phase for 36 weeks. The average final dose of doxazosin was 9.2 +/- 1.3 (SEM) mg and that of atenolol was 76.5 +/- 6.2 mg. During the 46 weeks of active treatment, the recumbent diastolic blood pressure (DBP) tended to be lower (p less than 0.05) in patients receiving atenolol at 10, 12, and 22 weeks of treatment. Recumbent systolic BP (SBP) and standing SBP and DBP were not different, however, between patients receiving doxazosin and those receiving atenolol. Recumbent and standing heart rate (HR) were lower (p less than 0.01) during atenolol. The decrease in serum total triglycerides, total cholesterol, and low-density lipoprotein (LDL)-cholesterol after 46 weeks of doxazosin was different (p less than 0.05) from the changes observed during atenolol therapy. Our data indicate that the antihypertensive action of doxazosin is accompanied by favorable effects on serum lipids.
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