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  • Title: [Comparison of amlodipine and the nifedipine retard preparation in the treatment of arterial hypertension].
    Author: Pivac N, Dobovisek J, Bagatin J, Gros Furek V, Rumboldt Z, Janezić A, Kveder R, Sjerobabski V, Simunić M, Sardelić S.
    Journal: Lijec Vjesn; 1993; 115(11-12):356-9. PubMed ID: 8176999.
    Abstract:
    The efficacy and acceptability of amlodipine (5-10 mg o.d.) and sustained-release nifedipine (20-40 mg b.i.d.) were compared in a multicenter, double-blind clinical trial. After a two-week placebo period, 71 essential hypertensives of both sexes, aged 51.7 +/- 8.5 years, having diastolic blood pressure of 95-114 mmHg were randomly allocated to either amlodipine 5 mg once daily (group A) or nifedipine 20 mg twice daily (group B). With respect to the blood pressure response, the initial dose was doubled after two weeks. No significant differences in blood pressures recorded at baseline and at the end of the placebo period were demonstrated. A significant reduction in both systolic and diastolic blood pressures in the supine position was observed already two days after the start of treatment. In the group A it decreased from 163.2 +/- 21.4/102.7 +/- 8.5 to 155.7 +/- 20.7/98.2 +/- 8.9 mm Hg (p < 0.05) and in the group B from 160.5 +/- 16.2/100.5 +/- 12.2 to 152.2 +/- 17.0/95.4 +/- 9.5 mm Hg (p < 0.05). The similar changes of blood pressure were observed in the standing position, as well. At the end of the study, the overall reduction of the supine diastolic blood pressure was 12.5% in the group A versus 5.2% in the group B (p < 0.05). In the standing position, amlodipine decreased diastolic blood pressure by 8.8% and nifedipine by 6.4% (p < 0.05). Furthermore, amlodipine decreased the standing diastolic blood pressure to a greater extent (8.8% versus 6.4%; p < 0.05) than nifedipine.(ABSTRACT TRUNCATED AT 250 WORDS)
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