Document Detail

Comparison of gas exchange measurements with a mouthpiece, face mask, and ventilated canopy.
MedLine Citation:
PMID:  8271366     Owner:  NLM     Status:  MEDLINE    
This study compared gas exchange measurements obtained by using a mask, mouthpiece, and ventilated canopy in 30 normal, healthy volunteers. The ventilated canopy and its gas analyzers had an accuracy for oxygen consumption of 98.0 +/- 0.8% and for carbon dioxide production of 100.1 +/- 1.1%. The study indicates that the apparatus used for gas exchange measurement will significantly affect the measurements. The magnitude of the effect is a significant 7.9% increase for oxygen consumption with a mouthpiece and a significant 7.1% increase with a face mask. Carbon dioxide production was significantly increased 10.2% with a mouthpiece and 4.1% with a face mask. There were no differences in the respiratory quotient. The specific purpose for collecting gas exchange measurements will determine whether these differences are of practical significance.
R A Forse
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Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  JPEN. Journal of parenteral and enteral nutrition     Volume:  17     ISSN:  0148-6071     ISO Abbreviation:  JPEN J Parenter Enteral Nutr     Publication Date:    1993 Jul-Aug
Date Detail:
Created Date:  1994-01-31     Completed Date:  1994-01-31     Revised Date:  2007-02-21    
Medline Journal Info:
Nlm Unique ID:  7804134     Medline TA:  JPEN J Parenter Enteral Nutr     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  388-91     Citation Subset:  IM    
Department of Surgery, Royal Victoria Hospital, McGill University, Montreal, Canada.
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MeSH Terms
Pulmonary Gas Exchange*
Ventilation / instrumentation*

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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