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Xenon measurement in breathing systems: a comparison of ultrasonic and thermal conductivity methods

R. King, M. Bretland, A. Wilkes, J. Dingley, John Dingley

Anaesthesia, Volume: 60, Issue: 12, Pages: 1226 - 1230

Swansea University Author: John Dingley

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DOI (Published version): 10.1111/j.1365-2044.2005.04379.x

Abstract

Xenon is an anaesthetic and possibly neuroprotective gas that is impossible to measure using conventional anaesthetic gas analysers. We compared the performance of two commissioned xenon analysers using ultrasonic and thermal conductivity principles against a reference method of laser refractometry....

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Published in: Anaesthesia
ISSN: 0003-2409 1365-2044
Published: 2005
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URI: https://cronfa.swan.ac.uk/Record/cronfa27497
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first_indexed 2016-04-28T01:13:16Z
last_indexed 2018-06-30T04:06:35Z
id cronfa27497
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spelling 2018-06-29T20:05:52.1072780 v2 27497 2016-04-27 Xenon measurement in breathing systems: a comparison of ultrasonic and thermal conductivity methods 1283ffdd09b091ec57ec3e235a48cfcc John Dingley John Dingley true false 2016-04-27 PMSC Xenon is an anaesthetic and possibly neuroprotective gas that is impossible to measure using conventional anaesthetic gas analysers. We compared the performance of two commissioned xenon analysers using ultrasonic and thermal conductivity principles against a reference method of laser refractometry. An experimental gas circuit was constructed and xenon concentrations compared over a range of 0-100% in oxygen. Eighty-two paired measurements were made comparing the experimental methods with laser refractometry. The ultrasonic method displayed good agreement with laser refractometry, with a mean difference of - 0.74% and two standard deviation limits of agreement of + 1.08% to - 2.56%. The agreement between laser refractometry and thermal conductivity was poor, the mean difference being - 5.37%, with two standard deviation limits of agreement of + 0.6% to - 11.3%. The ultrasonic method for measuring xenon concentrations can be used in breathing circuits. The thermal conductivity instrument may need further development. Journal Article Anaesthesia 60 12 1226 1230 0003-2409 1365-2044 31 12 2005 2005-12-31 10.1111/j.1365-2044.2005.04379.x COLLEGE NANME Medicine COLLEGE CODE PMSC Swansea University 2018-06-29T20:05:52.1072780 2016-04-27T21:56:40.7916450 Faculty of Medicine, Health and Life Sciences Swansea University Medical School - Medicine R. King 1 M. Bretland 2 A. Wilkes 3 J. Dingley 4 John Dingley 5
title Xenon measurement in breathing systems: a comparison of ultrasonic and thermal conductivity methods
spellingShingle Xenon measurement in breathing systems: a comparison of ultrasonic and thermal conductivity methods
John Dingley
title_short Xenon measurement in breathing systems: a comparison of ultrasonic and thermal conductivity methods
title_full Xenon measurement in breathing systems: a comparison of ultrasonic and thermal conductivity methods
title_fullStr Xenon measurement in breathing systems: a comparison of ultrasonic and thermal conductivity methods
title_full_unstemmed Xenon measurement in breathing systems: a comparison of ultrasonic and thermal conductivity methods
title_sort Xenon measurement in breathing systems: a comparison of ultrasonic and thermal conductivity methods
author_id_str_mv 1283ffdd09b091ec57ec3e235a48cfcc
author_id_fullname_str_mv 1283ffdd09b091ec57ec3e235a48cfcc_***_John Dingley
author John Dingley
author2 R. King
M. Bretland
A. Wilkes
J. Dingley
John Dingley
format Journal article
container_title Anaesthesia
container_volume 60
container_issue 12
container_start_page 1226
publishDate 2005
institution Swansea University
issn 0003-2409
1365-2044
doi_str_mv 10.1111/j.1365-2044.2005.04379.x
college_str Faculty of Medicine, Health and Life Sciences
hierarchytype
hierarchy_top_id facultyofmedicinehealthandlifesciences
hierarchy_top_title Faculty of Medicine, Health and Life Sciences
hierarchy_parent_id facultyofmedicinehealthandlifesciences
hierarchy_parent_title Faculty of Medicine, Health and Life Sciences
department_str Swansea University Medical School - Medicine{{{_:::_}}}Faculty of Medicine, Health and Life Sciences{{{_:::_}}}Swansea University Medical School - Medicine
document_store_str 0
active_str 0
description Xenon is an anaesthetic and possibly neuroprotective gas that is impossible to measure using conventional anaesthetic gas analysers. We compared the performance of two commissioned xenon analysers using ultrasonic and thermal conductivity principles against a reference method of laser refractometry. An experimental gas circuit was constructed and xenon concentrations compared over a range of 0-100% in oxygen. Eighty-two paired measurements were made comparing the experimental methods with laser refractometry. The ultrasonic method displayed good agreement with laser refractometry, with a mean difference of - 0.74% and two standard deviation limits of agreement of + 1.08% to - 2.56%. The agreement between laser refractometry and thermal conductivity was poor, the mean difference being - 5.37%, with two standard deviation limits of agreement of + 0.6% to - 11.3%. The ultrasonic method for measuring xenon concentrations can be used in breathing circuits. The thermal conductivity instrument may need further development.
published_date 2005-12-31T03:33:20Z
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score 11.012678

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