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Effects of Manidipine/Delapril versus Olmesartan/Hydrochlorothiazide Combination Therapy in Elderly Hypertensive Patients with Type 2 Diabetes Mellitus.

Author(s): Fogari R, Derosa G, Zoppi A, Rinaldi A, Preti P, Lazzari P, Mugellini A

Affiliation(s): Department of Internal Medicine and Therapeutics, Clinica Medica II-Fondazione IRCCS Policlinico S. Matteo, University of Pavia.

Publication date & source: 2008-01, Hypertens Res., 31(1):43-50.

The purpose of this study was to compare the combination treatments of manidipine/delapril and olmesartan/hydrochlorothiazide (HCTZ) in elderly diabetic hypertensives. After a 4-week placebo period, 158 hypertensive patients with type 2 diabetes (age range: 66 to 74 years) were randomized to receive combination treatment of 10 mg manidipine plus 30 mg delapril or 20 mg olmesartan plus 12.5 mg HCTZ for 48 weeks in a prospective, parallel arm trial. After 12 weeks, manidipine or HCTZ was doubled in nonresponders (systolic blood pressure [SBP] >/=130 mmHg and/or diastolic blood pressure [DBP] >/=80 mmHg). Patients were checked at the end of the placebo period and every 12 weeks thereafter. At each visit, lying, sitting and standing BP as well as fasting glycemia, glycosylated hemoglobin (HbA1c), electrolytes, uric acid, total cholesterol (TC), high-density lipoprotein-cholesterol (HDL-C) and triglycerides (TG) were evaluated. Both combinations reduced sitting SBP (-27.7 and -28.3 mmHg, respectively; both p<0.001) and DBP (-15.1 and -14.8 mmHg, respectively; both p<0.01) with no difference between the two treatments. Standing DBP was more markedly reduced by olmesartan/HCTZ (-19.5 mmHg; p<0.001) than by manidipine/delapril (-14.7 mmHg; p<0.05 vs. olmesartan/HCTZ). No changes in metabolic parameters were observed with manidipine/delapril, whereas an increase in HbA1c (+0.7%; p<0.05), uric acid (+0.4 mg/dL; p<0.05) and TG (+41.3 mg/dL; p<0.05), and a decrease in serum potassium (-0.3 mmol/L; p<0.05) and HDL-C (-3.4 mg/dL; p<0.05) were found in the olmesartan/HCTZ group. In conclusion, both combinations were similarly effective in reducing BP in elderly hypertensive diabetic patients. However, manidipine/delapril offered some advantages in terms of the less-pronounced BP orthostatic changes and absence of metabolic adverse effects. (Hypertens Res 2008; 31: 43-50).

Page last updated: 2008-03-26

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