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Influence from breathing pattern on alcohol and tracer gas expirograms: Implications for alcolock use
Mälardalens högskola, Akademin för innovation, design och teknik. (ISS)
Hök Instrument AB.
Mälardalens högskola, Akademin för innovation, design och teknik. (ISS)ORCID-id: 0000-0002-5832-5452
Uppsala University.
2011 (engelsk)Inngår i: Forensic Science International, ISSN 0379-0738, E-ISSN 1872-6283, Vol. 206, nr 1-3, s. 52-57Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Measurement of breath alcohol concentration is strongly influenced by timing and the breathing pattern. In particular, shallow expiration and hyperventilation leads to underestimation of the breath alcohol concentration. In the present study, expirograms of alcohol, water and carbon dioxide were recorded in 30 healthy individuals at various breathing manoeuvres (tidal volume, slow maximum and vital capacity expiration, breath holding, and hyperventilation). Estimation of the end expiratory alcohol concentration with the use of simultaneously measured carbon dioxide was shown to reverse the tendency of underestimation at shallow expiration and hyperventilation. These findings indicate that breath alcohol estimations can be performed at shorter expiration time and reduced expired volume compared to existing alcolocks. This is believed to improve their usability and to prevent a possible route for manipulation.

sted, utgiver, år, opplag, sider
Elsevier, 2011. Vol. 206, nr 1-3, s. 52-57
HSV kategori
Identifikatorer
URN: urn:nbn:se:mdh:diva-10111DOI: 10.1016/j.forsciint.2010.06.016ISI: 000288200400033PubMedID: 20619980Scopus ID: 2-s2.0-79952444245OAI: oai:DiVA.org:mdh-10111DiVA, id: diva2:343256
Tilgjengelig fra: 2010-08-12 Laget: 2010-08-12 Sist oppdatert: 2017-12-12bibliografisk kontrollert

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