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A new capnograph based on an electro acoustic sensor
Mälardalen University, School of Innovation, Design and Engineering.ORCID iD: 0000-0001-8704-402X
Mälardalen University, School of Innovation, Design and Engineering.
2008 (English)In: Medical and Biological Engineering and Computing, ISSN 0140-0118, E-ISSN 1741-0444, Vol. 46, p. 55-59Article in journal (Refereed) Published
Abstract [en]

End tidal carbon dioxide measurements with an electro acoustic capnograph prototype have been demonstrated. The aim of this study was to verify that it is possible to obtain an adequate capnogram using the prototype and to investigate the influence of ambient temperature and humidity variations. By simultaneous measurements with a reference capnograph, on subjects performing exercise, hypo- and hyperventilation, PETCO2 readings from the reference were compared with the output signal from the prototype. The capnogram from the prototype correlated well with the reference in terms of breath time. The first parts of the expiration and inspiration phases were steeper for the reference than the prototype. The output signal from the prototype correlated well with the reference PETCO2 readings with a correlation coefficient of 0.93 at varied temperature and relative humidity. 

Place, publisher, year, edition, pages
2008. Vol. 46, p. 55-59
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:mdh:diva-7126DOI: 10.1007/s11517-007-0228-4ISI: 000251730800006Scopus ID: 2-s2.0-37549042785OAI: oai:DiVA.org:mdh-7126DiVA, id: diva2:237136
Available from: 2009-09-25 Created: 2009-09-25 Last updated: 2017-12-13Bibliographically approved

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Folke, Mia

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