Concordance between capnography and arterial blood gas measurements of carbon dioxide in acute asthma.
Corbo J, Bijur P, Lahn M, Gallagher EJ. Ann Emerg Med. 2005 Oct;46(4):323-7
In this study, 39 Patients, 37 Classified as “Severe Asthma,” received simultaneous measurements of arterial carbon dioxide and end-tidal carbon dioxide. The mean difference between Pa02 and PetCO2 was 1.0 mm Hg. The median Difference was 0 mm Hg. Only 2 patients were outside the 5 mg HG agreement (1-6, 1-12).
“In patients with acute, severe asthma exacerbations, we conclude that concordance between PetCo2 obtained by capnography and PaCo2 measured by arterial gas is high.”
Bottom Line for EMS: End tidal CO2 gives a good indication of the arterial blood gas level and can help a paramedic evaluate the severity of an asthmatic’s condition.
No comments:
Post a Comment