| An analysis of the components of the pulmonary shunt equation: significance of the alveolar-arterial oxygen gradient, arterio-venous oxygen content difference, and mixed venous oxygen pressure. | |
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MedLine Citation:
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PMID: 762734 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Pulmonary shunt calculated by the Berggren method is commonly used as an indicator of pulmonary function. Although there is usually a good correlation between the shunt and the A-aDO2, other physiologic parameters involved in the shunt equation may significantly alter pulmonary function. The purpose of this study is to show the contribution of the PVO2 and a--v diff to the shunt equation. Data from eight selected patients with A--aDo2 values ranging from 300 to 395 torr and calculated shunts ranging from 6 to 35% were selected for this purpose. In patients with significant changes in PVO2 and a--v diff, the A--aDO2 is more reliable as an indicator of pulmonary function than is the calculated shunt. |
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Authors:
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R Gazitua; R Goodfellow; L Villar; L Williams; E Hirsch |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: The Journal of trauma Volume: 19 ISSN: 0022-5282 ISO Abbreviation: J Trauma Publication Date: 1979 Feb |
Date Detail:
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Created Date: 1979-04-25 Completed Date: 1979-04-25 Revised Date: 2004-11-17 |
Medline Journal Info:
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Nlm Unique ID: 0376373 Medline TA: J Trauma Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: 81-5 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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Humans Lung / physiology* Mathematics Oxygen / blood* Pulmonary Alveoli / physiology Respiration* |
| Chemical | |
Reg. No./Substance:
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7782-44-7/Oxygen |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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