Evaluation of a transportable capnometer for monitoring end-tidal carbon dioxide.
Anaesthesia
; 65(10): 1017-21, 2010 Oct.
Article
in En
| MEDLINE
| ID: mdl-21198468
ABSTRACT
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.
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Carbon Dioxide
/
Capnography
/
Monitoring, Physiologic
Type of study:
Evaluation_studies
Limits:
Humans
Language:
En
Journal:
Anaesthesia
Year:
2010
Document type:
Article
Affiliation country:
Dinamarca