Linked Life Data

19524073

Source:http://linkedlifedata.com/resource/pubmed/id/19524073

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
3
pubmed:dateCreated
2009-7-22
pubmed:abstractText
The altitude performance of two NO analysers using different NO detectors was studied. The analysers and their flow regulators were tested with simulated exhalations of reference gases. At 4000 m, volume flow was +35% and mass flow -24% of nominal in both instruments. The reduced mass flow increased the exhaled NO fraction by 26% for a given rate of NO excretion. Furthermore, the electrochemical NO detector in one analyser showed an increased signal level for a given partial pressure of test gas. Taken together, these two effects increased the signal output by 60% in comparison to the NO partial pressure. To avoid the above errors, it is proposed that the flow regulator should be readjusted to give a volume flow of 50 ml s(-1) at the altitude of interest and that the analyser should be recalibrated to the operational altitude. Finally, it is recommended that exhaled NO should always be reported as partial pressure and not as volume fraction, in order to compare measurements at any altitude.
pubmed:commentsCorrections
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jul
pubmed:issn
1878-1519
pubmed:author
pubmed:issnType
Electronic
pubmed:day
31
pubmed:volume
167
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
292-8
pubmed:dateRevised
2010-2-17
pubmed:meshHeading
pubmed:year
2009
pubmed:articleTitle
Measuring exhaled nitric oxide at high altitude.
pubmed:affiliation
Section of Environmental Physiology, Department of Physiology and Pharmacology, Karolinska Institutet, SE-171 77 Stockholm, Sweden. tryggve.hemmingsson@ki.se
pubmed:publicationType
Journal Article, Comparative Study, Research Support, Non-U.S. Gov't