Document Detail

Relationship between end-tidal and arterial carbon dioxide partial pressure using a cuffed oropharyngeal airway and a tracheal tube.
MedLine Citation:
PMID:  9602598     Owner:  NLM     Status:  MEDLINE    
We have compared the differences between end-tidal PE'CO2 and arterial PaCO2 carbon dioxide partial pressures during general anaesthesia using either a cuffed oropharyngeal airway (COPA) or a tracheal tube (TT) in spontaneously breathing adult patients. After induction of anaesthesia, a COPA was inserted in 20 patients who were allowed to breathe spontaneously. When steady state was reached, PE'CO2 and PaCO2 were recorded. The COPA was removed, the trachea intubated with a TT and spontaneous ventilation allowed to resume. After a stable PE'CO2 was reestablished, PaCO2 was measured again and PE'CO2 recorded. Mean difference between PaCO2 and PE'CO2 with the COPA was 0.72 (SD 0.45) kPa and with the TT 0.64 (0.40) kPa (ns; paired t test). Our results suggest that Pe'CO2 is a clinically acceptable indicator of PaCO2 in adults breathing spontaneously via a COPA.
Y Nakata; T Goto; S Uezono; F Sasaki; S Morita
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Publication Detail:
Type:  Clinical Trial; Comparative Study; Controlled Clinical Trial; Journal Article    
Journal Detail:
Title:  British journal of anaesthesia     Volume:  80     ISSN:  0007-0912     ISO Abbreviation:  Br J Anaesth     Publication Date:  1998 Feb 
Date Detail:
Created Date:  1998-06-03     Completed Date:  1998-06-03     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0372541     Medline TA:  Br J Anaesth     Country:  ENGLAND    
Other Details:
Languages:  eng     Pagination:  253-4     Citation Subset:  IM    
Department of Anaesthesia, Teikyo University School of Medicine, Ichihara Hospital, Chiba, Japan.
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MeSH Terms
Anesthesia, General
Carbon Dioxide / blood,  physiology*
Intubation / instrumentation*
Intubation, Intratracheal
Monitoring, Intraoperative / methods*
Partial Pressure
Tidal Volume
Reg. No./Substance:
124-38-9/Carbon Dioxide

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