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Updated: Jan 21, 2026

Expired CO2 Measurement in Intubated or Spontaneously Breathing Patients from the Emergency Department
Published on: January 29, 2011
Unknown Use of End-tidal CO2 in Metabolic Emergencies in Pediatric Patients
Sebastien Redant1,2, Francois Angoulvant3, Patrick M Honore2
1Emergency Department, HUDERF University Hospital, ULB University, Brussels, Belgium.
Abstract:
The authors describe two cases of metabolic acidosis, caused by diabetic ketoacidosis in the first case and by dehydration following gastroenteritis in the second one. Both patients were followed with noninvasive end-tidal CO2 (ETCO2) monitoring. A correlation between EtCO2 and PCO2 and HCO3- has been established in the literature. Noninvasive ETCO2 is used in only 5-6% of metabolic emergencies. In contrast, users described its use as easy and convenient.
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