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  • Title: Hypotensive action and increased plasma renin activity by Ca2+ antagonist (Nifedipine) in hypertensive patients.
    Author: Aoki K, Yoshida T, Kato S, Tazumi K, Sato I.
    Journal: Jpn Heart J; 1976 Jul; 17(4):479-84. PubMed ID: 966384.
    Abstract:
    The Ca2+ antagonistic coronary vasodilator, Nifedipine, was sublingually administered by a dose of 30 mg to 19 patients with hypertension. Blood pressure of patients with with essential hypertension (n=14) decreased from 177 +/- 24 to 123 +/- 13 mmHg systolic and from 108 +/- 12 to 80 +/- 11 mmHg diastolic (mean +/- SD) (p less than 0.01). Plasma renin activity (PRA) increased significantly from 0.73 +/- 0.62 to 1.50 +/- 1.02 ng/ml/h (p less than 0.05). The same tendency was observed in malignant and renovascular hypertension. In primary aldosteronism (n = 2), blood pressure decreased but PRA did not increase. Hypotensive action and increased plasma renin activity by Ca2+ antagonist, Nifedipine, were clearly demonstrated in patients with hypertension.
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