| A two-bag system for continuous measurement of oxygen uptake. | |
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MedLine Citation:
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PMID: 1623738 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Collection of mixed expired gas in a bag has been a classic method for the estimation of VO2 during the steady state but has not been employed during unsteady state exercise in part because there is a need for suspending the acquisition of data during the period of gas analysis unless many bags are used. In this study a two-bag system is described in which one bag fills while the other is analyzed. Bag volume is under the control of the operator, and we employed volumes of 30 to 50 L. Thirty-one subjects were studied with this circuit in a progressive treadmill test. Although VO2 could be falsely elevated during periods of overbreathing, this source of error could be identified and its effect reduced if VO2 was plotted against both ventilation and power requirement. Plateau values of VO2 were identified only in six subjects and the ventilatory threshold in 16. |
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Authors:
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J H Auchincloss; R Gilbert; G W Lighty; D Peppi; C L Hare |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Chest Volume: 102 ISSN: 0012-3692 ISO Abbreviation: Chest Publication Date: 1992 Jul |
Date Detail:
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Created Date: 1992-08-07 Completed Date: 1992-08-07 Revised Date: 2004-11-17 |
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: 112-6 Citation Subset: AIM; IM |
Affiliation:
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Department of Medicine, State University of New York, Syracuse. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Adult Aged Breath Tests / instrumentation* Electronics, Medical Equipment Design Female Humans Male Middle Aged Monitoring, Physiologic / instrumentation Oxygen / analysis* Oxygen Consumption* Pulmonary Gas Exchange Reproducibility of Results |
| 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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