Document Detail

Measurement of carbon dioxide output, alveolar carbon dioxide concentration and alveolar ventilation in the neonate.
MedLine Citation:
PMID:  861112     Owner:  NLM     Status:  MEDLINE    
A system is described for measuring carbon dioxide output and alveolar carbon dioxide concentration in the neonate and for deriving the volume of alveolar ventilation. Air is drawn through a soft rubber face mask applied loosely to the face so that all expired gas is entrained. A fraction of the flow is sampled by an infra-red analyser, the signal from which is integrated to provide a measure of carbon dioxide output. Alveolar carbon dioxide concentration is measured by continuous sampling of expired gas through a nasal catheter. The response time of the catheter-analyser system is 140 ms. In 20 healthy 1-day-old neonates the mean carbon dioxide excretion was 5.86 ml/min. kg-1 (STPD) and the mean alveolar PCO2 was 4.85 kPa. From these measurements mean alveolar ventilation 147 ml/min. kg-1 (BTPS) was calculated. These results are similar to those obtained by other methods.
J M Evans; M I Hogg; M Rosen
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  British journal of anaesthesia     Volume:  49     ISSN:  0007-0912     ISO Abbreviation:  Br J Anaesth     Publication Date:  1977 May 
Date Detail:
Created Date:  1977-07-23     Completed Date:  1977-07-23     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  0372541     Medline TA:  Br J Anaesth     Country:  ENGLAND    
Other Details:
Languages:  eng     Pagination:  453-6     Citation Subset:  IM    
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MeSH Terms
Carbon Dioxide / analysis*
Infant, Newborn*
Pulmonary Alveoli / physiology*
Respiratory Function Tests / instrumentation,  methods*
Reg. No./Substance:
124-38-9/Carbon Dioxide

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

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