| Cardiovascular changes during isometric and dynamic exercise in chronic lung disease. | |
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MedLine Citation:
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PMID: 3582516 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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To compare circulatory changes during dynamic and isometric exercise in patients with chronic lung disease, vascular pressures and cardiac output were measured in pulmonary and systemic circulation. The patients, mainly chronic bronchitics, were divided according to pulmonary vascular resistance (PVR): six patients with PVR below 120 dyn.s.cm-5, and 17 with PVR above this value. Exercise was performed using the legs, in a supine position, at low load. Oxygen consumption increased, on average, from 270 ml/min at rest, to 340 ml/min during isometric exercise, and 585 ml/min during dynamic exercise. Isometric exercise produced an increase in systemic artery pressure similar to that of dynamic exercise, but other vascular changes were of much smaller magnitude: pulmonary artery pressure increased by 4 mmHg with isometric exercise, and by 14 mmHg during dynamic exercise, on average; for cardiac output, these changes were 0.8 and 3.3 l/min, respectively. The pressure/flow relationship in the pulmonary circulation was comparable for both types of exercise. Changes in filling pressures in relation to stroke volume were more marked in the group of patients with elevated pulmonary vascular resistance. Changes in wedge pressure and in right atrial pressure were remarkably parallel for patients with normal as well as with high pulmonary vascular resistance. |
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Authors:
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F Schrijen; P Ravez; R Candina-Villar; J M Polu |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: European journal of respiratory diseases Volume: 70 ISSN: 0106-4339 ISO Abbreviation: Eur J Respir Dis Publication Date: 1987 Apr |
Date Detail:
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Created Date: 1987-07-17 Completed Date: 1987-07-17 Revised Date: 2008-11-21 |
Medline Journal Info:
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Nlm Unique ID: 8006891 Medline TA: Eur J Respir Dis Country: DENMARK |
Other Details:
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Languages: eng Pagination: 199-204 Citation Subset: IM; S |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Blood Pressure Cardiac Output* Humans Isometric Contraction Lung Diseases, Obstructive / physiopathology* Physical Exertion* Pulmonary Circulation* Stroke Volume Vascular Resistance |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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