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  • Title: Long-acting lacidipine versus short-acting nifedipine in the treatment of asymptomatic acute blood pressure increase.
    Author: Sánchez M, Sobrino J, Ribera L, Adrián MJ, Torres M, Coca A.
    Journal: J Cardiovasc Pharmacol; 1999 Mar; 33(3):479-84. PubMed ID: 10069685.
    Abstract:
    We compared antihypertensive efficacy and safety of a single administration of equipotent doses of lacidipine versus nifedipine in the hypertensive urgencies. Twenty-nine asymptomatic essential hypertensive patients (nine men, 20 women) with a mean age of 55.03+/-11.19 years and baseline diastolic blood pressure (DBP) of > or =120 mm Hg after resting 30 min, not taking antihypertensive drugs for the last 24 h, were randomized in a single-blind fashion to receive lacidipine, 4 mg (LCD, 15 patients) or short-acting nifedipine, 20 mg (NFD, 14 patients) in a single dose. Blood pressure (BP) and heart rate (HR) were taken every 30 min during the first 8 h and every 2 h until 24 h of follow-up. Baseline BP values were similar in the two groups (LCD, 222.5+/-32.8/124.6+/-8.4 mm Hg vs. NFD, 215.9+/-20.6/128+/-7.7 mm Hg; p = NS). Both drugs promoted a significant reduction of systolic blood pressure (SBP; 169.6+/-27.8 vs. 170.6+/-25.3 mm Hg) and diastolic blood pressure (DBP; 104.1+/-16 vs. 102.9+/-12.4 mm Hg) after 8 h. However, either SBP (165+/-27.3 vs. 190.6+/-18.2 mm Hg; p = 0.008) and DBP (99.9+/-12.3 vs. 117.2+/-11.4 mm Hg; p = 0.001) were significantly higher in the NFD group after 24-h dosing. Eleven patients in the LCD group had a decrease in BP >25% of the baseline value both 8 and 24 h after the dose. Although 10 patients showed the same response in the NFD group 8 h after the dose, only four patients maintained these values at 24 h. One patient treated with NFD had a transient cerebrovascular ischemic attack. No adverse effects were observed in the LCD group. We conclude that the long-acting calcium antagonist lacidipine was more effective than the short-acting nifedipine in both controlling BP and maintaining this BP reduction over 8 h in essential hypertensive patients with acute asymptomatic BP increase.
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