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Automated measurement of respiratory gas exchange by an inert gas dilution techniqueA respiratory gas analyzer (RGA) has been developed wherein a mass spectrometer is the sole transducer required for measurement of respiratory gas exchange. The mass spectrometer maintains all signals in absolute phase relationships, precluding the need to synchronize flow and gas composition as required in other systems. The RGA system was evaluated by comparison with the Douglas bag technique. The RGA system established the feasibility of the inert gas dilution method for measuring breath-by-breath respiratory gas exchange. This breath-by-breath analytical capability permits detailed study of transient respiratory responses to exercise.
Document ID
19750027247
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Sawin, C. F.
Rummel, J. A.
Michel, E. L.
(NASA Johnson Space Center Biomedical Research Div., Houston, Tex., United States)
Date Acquired
August 8, 2013
Publication Date
October 1, 1974
Publication Information
Publication: Journal of Applied Physiology
Volume: 37
Subject Category
Man/System Technology And Life Support
Accession Number
75A11319
Funding Number(s)
CONTRACT_GRANT: NAS9-12759
Distribution Limits
Public
Copyright
Other

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