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  • Title: Long-term efficacy and safety of nitrendipine in severe essential hypertension.
    Author: Burris JF, Nash DT, Mroczek WJ.
    Journal: J Cardiovasc Pharmacol; 1988; 12 Suppl 4():S157-60. PubMed ID: 2468863.
    Abstract:
    This multicenter study evaluated nitrendipine, a dihydropyridine calcium antagonist, alone or in combination with hydrochlorothiazide and/or propranolol in severe essential hypertension (baseline supine diastolic BP greater than or equal to 115 mm Hg). After an initial 3- to 7-day drug-free run-in, a 2- to 5-week titration phase, and a 4- to 6-week maintenance period, patients with supine diastolic less than or equal to 90 mm Hg entered long-term maintenance. Four centers enrolled 57 patients initially; 43 qualified for the extended therapy trial, and 30 had completed greater than 2 years of therapy (mean duration of 756 days) at the time of analysis. Supine BP fell from 186/122 +/- 5/2 mm Hg at baseline (group mean +/- SEM) to 139/89 +/- 3/2 mm Hg after 2 years (p less than 0.001/0.001). Standing BP fell from 185/126 +/- 5/2 to 138/90 +/- 3/2 mm Hg (p less than 0.001/0.001). Supine pulse rate changed from 82 beats/min at baseline to 74 beats/min (p less than 0.01) and standing pulse rate from 88 to 78 beats/min (p less than 0.01). Seventeen patients received nitrendipine alone, 4 received nitredipine plus HCTZ, 2 received nitrendipine plus propranolol, and 7 patients received all three drugs. Response was similar in patients less than 50 years old and in those greater than or equal to 50 years, and also in black and nonblack patients. Three patients were lost to follow-up, six were terminated for inadequate BP control, and four terminated for side effects. Twenty-four patients completed greater than 2.5 years treatment (mean duration of 933 days).(ABSTRACT TRUNCATED AT 250 WORDS)
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