| Hemodynamic effects of nifedipine at rest and during exercise in primary pulmonary hypertension. | |
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MedLine Citation:
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PMID: 6734275 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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The potential short-term pulmonary vasodilator effect of a calcium-channel blocker, nifedipine, was tested in seven patients with primary pulmonary hypertension. Nifedipine (20 mg) produced a significant (p less than 0.01) and persistent decrease in mean pulmonary arterial pressure (58.1 +/- 14.3 to 48.6 +/- 16.3 mm Hg) and pulmonary vascular resistance (1,070 +/- 260 to 695 +/- 266 dynes X sec X cm-5). Cardiac index increased from 2.5 +/- 0.6 to 3.3 +/- 0.8 L/min/m2 (p less than 0.01), and heart rate was unchanged despite a fall in systemic pressure. In three patients tested during exercise on a bicycle, nifedipine resulted in an increase in the duration of exercise in two and a blunting of the exercise-induced increase in pulmonary pressure in all three. Long-term treatment was initiated in five of the seven patients and in two additional patients who did not receive nifedipine in the short-term study; all but one experienced symptomatic improvement. A persistent hemodynamic improvement was observed in three of the four patients restudied after long-term therapy. In conclusion, this study demonstrated the short-term beneficial hemodynamic effects of nifedipine, both at rest and during exercise. A more extensive long-term follow-up is necessary to establish the usefulness of this drug in the treatment of primary pulmonary hypertension. |
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Authors:
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M T Olivari; T B Levine; E K Weir; J N Cohn |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Chest Volume: 86 ISSN: 0012-3692 ISO Abbreviation: Chest Publication Date: 1984 Jul |
Date Detail:
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Created Date: 1984-08-03 Completed Date: 1984-08-03 Revised Date: 2008-11-21 |
Medline Journal Info:
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Nlm Unique ID: 0231335 Medline TA: Chest Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: 14-9 Citation Subset: AIM; IM |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Adolescent Adult Aged Female Hemodynamics / drug effects Humans Hypertension, Pulmonary / drug therapy* Male Middle Aged Nifedipine / therapeutic use* Physical Exertion* Rest |
| Chemical | |
Reg. No./Substance:
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21829-25-4/Nifedipine |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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