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  • Title: Antihypertensive effects of verapamil, captopril and their combination at rest and during dynamic exercise.
    Author: Di Somma S, Petitto M, Liguori V, Carotenuto A, Paulucci A, De Divitiis O.
    Journal: Arzneimittelforschung; 1992 Feb; 42(2):103-7. PubMed ID: 1610414.
    Abstract:
    In order to investigate the antihypertensive effects of verapamil (CAS 52-53-9) and captopril (CAS 62571-86-2), administered alone or in combination therapy, the blood pressure and heart rate effects of these two drugs at rest and during dynamic exercise were evaluated in a double blind study in 30 moderate or severe essential hypertensive patients. After a 30-day placebo wash-out period, 15 patients (age 60.6 +/- 8.0 years, mean +/- SD) were allocated to verapamil sustained-release treatment (120 mg b.i.d. for the first month of therapy and 240 mg b.i.d. for the second one) and 15 patients (age 58.4 +/- 10.0 years) to captopril treatment (25 mg b.i.d. and 50 mg b.i.d. for the first and second month of therapy, respectively). At low dosage both verapamil and captopril significantly (p less than 0.001) and markedly reduced blood pressure values. Goal diastolic blood pressure of 90 mmHg was achieved in 40% and 20% of patients in the verapamil group and in the captopril group, respectively, at high dosage. In contrast to captopril, verapamil induced a significant and dose-dependent heart rate reduction and markedly attenuated the pressor and tachycardiac responses to dynamic exercise. The combination of verapamil 240 mg b.i.d. plus captopril 50 mg b.i.d. was then administered to patients, whose blood pressure was not satisfactorily controlled by monotherapy. This regimen allowed a better blood pressure control both at rest and during exercise than on monotherapy and induced a complete blood pressure normalization in 62% of patients.(ABSTRACT TRUNCATED AT 250 WORDS)
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