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dc.contributor.author
Karlen, Walter
dc.contributor.author
Gan, Heng
dc.contributor.author
Chiu, Michelle
dc.contributor.author
Dunsmuir, Dustin
dc.contributor.author
Zhou, Guohai
dc.contributor.author
Dumont, Guy A.
dc.contributor.author
Ansermino, J. Mark
dc.date.accessioned
2018-10-18T12:47:51Z
dc.date.available
2017-06-11T11:17:26Z
dc.date.available
2018-10-18T12:47:51Z
dc.date.issued
2014-06-11
dc.identifier.issn
1932-6203
dc.identifier.other
10.1371/journal.pone.0099266
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/87035
dc.identifier.doi
10.3929/ethz-b-000087035
dc.description.abstract
The recommended method for measuring respiratory rate (RR) is counting breaths for 60 s using a timer. This method is not efficient in a busy clinical setting. There is an urgent need for a robust, low-cost method that can help front-line health care workers to measure RR quickly and accurately. Our aim was to develop a more efficient RR assessment method. RR was estimated by measuring the median time interval between breaths obtained from tapping on the touch screen of a mobile device. The estimation was continuously validated by measuring consistency (% deviation from the median) of each interval. Data from 30 subjects estimating RR from 10 standard videos with a mobile phone application were collected. A sensitivity analysis and an optimization experiment were performed to verify that a RR could be obtained in less than 60 s; that the accuracy improves when more taps are included into the calculation; and that accuracy improves when inconsistent taps are excluded. The sensitivity analysis showed that excluding inconsistent tapping and increasing the number of tap intervals improved the RR estimation. Efficiency (time to complete measurement) was significantly improved compared to traditional methods that require counting for 60 s. There was a trade-off between accuracy and efficiency. The most balanced optimization result provided a mean efficiency of 9.9 s and a normalized root mean square error of 5.6%, corresponding to 2.2 breaths/min at a respiratory rate of 40 breaths/min. The obtained 6-fold increase in mean efficiency combined with a clinically acceptable error makes this approach a viable solution for further clinical testing. The sensitivity analysis illustrating the trade-off between accuracy and efficiency will be a useful tool to define a target product profile for any novel RR estimation device.
en_US
dc.format
application/pdf
en_US
dc.language.iso
en
en_US
dc.publisher
Public Library of Science
en_US
dc.rights.uri
http://creativecommons.org/licenses/by/4.0/
dc.title
Improving the Accuracy and Efficiency of Respiratory Rate Measurements in Children Using Mobile Devices
en_US
dc.type
Journal Article
dc.rights.license
Creative Commons Attribution 4.0 International
ethz.journal.title
PLoS ONE
ethz.journal.volume
9
en_US
ethz.journal.issue
6
en_US
ethz.journal.abbreviated
PLoS ONE
ethz.pages.start
e99266
en_US
ethz.size
9 p.
en_US
ethz.version.deposit
publishedVersion
en_US
ethz.identifier.nebis
006206116
ethz.publication.place
San Francisco, CA, USA
en_US
ethz.publication.status
published
en_US
ethz.leitzahl
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02070 - Dep. Gesundheitswiss. und Technologie / Dep. of Health Sciences and Technology::09533 - Karlen, Walter (SNF-Förderprofessur) / Karlen, Walter (SNF-Förderprofessur)
en_US
ethz.leitzahl.certified
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02070 - Dep. Gesundheitswiss. und Technologie / Dep. of Health Sciences and Technology::09533 - Karlen, Walter (SNF-Förderprofessur) / Karlen, Walter (SNF-Förderprofessur)
ethz.relation.isReferencedBy
10.1371/journal.pone.0118260
ethz.date.deposited
2017-06-11T11:18:15Z
ethz.source
ECIT
ethz.identifier.importid
imp5936521fd710496425
ethz.ecitpid
pub:136966
ethz.eth
no
en_US
ethz.availability
Open access
en_US
ethz.rosetta.installDate
2017-07-20T16:15:33Z
ethz.rosetta.lastUpdated
2018-09-01T04:07:32Z
ethz.rosetta.exportRequired
true
ethz.rosetta.versionExported
true
ethz.COinS
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