Evaluation of a transportable capnometer for monitoring end-tidal carbon dioxide

Autor:	T. Hildebrandt, M. Espelund, K. S. Olsen
Rok vydání:	2010
Předmět:	chemistry.chemical_compound Anesthesiology and Pain Medicine chemistry business.industry Anesthesia Hyperventilation Expired gas Carbon dioxide Analytical chemistry medicine medicine.symptom business End tidal
Zdroj:	Anaesthesia. 65:1017-1021
ISSN:	0003-2409
DOI:	10.1111/j.1365-2044.2010.06499.x
Popis:	We compared a small and transportable Capnometer (EMMA™) with a reference capnometer, the Siesta i TS Anaesthesia. During air-breathing through a facemask, both the EMMA (nine modules) and reference capnometer sampled expired gas simultaneously. A wide range of end-tidal carbon dioxide values were obtained during inhalation of carbon dioxide and voluntary hyperventilation. The median IQR [range] difference between all sets of carbon dioxide values (EMMA - reference) was -0.3 (-0.6 to 0.0 [-1.7 to 1.6] kPa; n = 297) using new batteries, which was statistically significant (p = 0.04) and located to two of the nine EMMAs tested. Using batteries with reduced voltage did not influence the measurements. The 95% CI of the medians of the differences were -0.4 to -0.2. We conclude that the EMMA can slightly under-read the end-tidal carbon dioxide but is generally comparable with a free-standing monitor. The precision of the EMMAs was similar whether new batteries or batteries with reduced voltage were used.
Databáze:	OpenAIRE
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