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Screening of obstructive sleep apnea using Hilbert–Huang decomposition of oronasal airway pressure recordings

2010Journal article Restricted access
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dc.contributor.authorCaseiro, P.
dc.contributor.authorFonseca-Pinto, Rui
dc.contributor.authorAndrade, A.
dc.date.accessioned2018-07-10T13:54:59Z
dc.date.available2018-07-10T13:54:59Z
dc.date.issued2010
dc.description.abstractPolysomnographic signals are usually recorded from patients exhibiting symptoms related to sleep disorders such as obstructive sleep apnea (OSA). Analysis of polysomnographic data allows for the determination of the type and severity of sleep apnea or other sleep-related disorders by a specialist or technician. The usual procedure entails an overnight recording several hours long. This paper presents a methodology to help with the screening of OSA using a 5-min oronasal airway pressure signal emanating from a polysomnographic recording during the awake period, eschewing the need for an overnight recording. The clinical sample consisted of a total of 41 subjects, 20 non-OSA individuals and 21 individuals with OSA. A signal analysis technique based on the Hilbert-Huang transform was used to extract intrinsic oscillatory modes from the signals. The frequency distribution of both the first mode and second mode and their sum were shown to differ significantly between non-OSA subjects and OSA patients. An index measure based on the distribution frequencies of the oscillatory modes yielded a sensitivity of 81.0% (for 95% specificity) for the detection of OSA. Two other index measures based on the relation between the area and the maximum of the 1st and 2nd halves of the frequency histogram both yielded a sensitivity of 76.2% (for 95% specificity). Although further tests will be needed to test the reproducibility of these results, the proposed measures seem to provide a fast method to screen OSA patients, thus reducing the costs and the waiting time for diagnosis.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.doi10.1016/j.medengphy.2010.01.008pt_PT
dc.identifier.urihttp://hdl.handle.net/10400.8/3329
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.subjectROC curvept_PT
dc.subjectObstructive sleep apneapt_PT
dc.subjectNosept_PT
dc.subjectPolysomnographypt_PT
dc.subjectEmpirical mode decompositionpt_PT
dc.subjectHilbert-Huang transformpt_PT
dc.titleScreening of obstructive sleep apnea using Hilbert–Huang decomposition of oronasal airway pressure recordingspt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage568pt_PT
oaire.citation.issue6pt_PT
oaire.citation.startPage561pt_PT
oaire.citation.titleMedical Engineering and Physicspt_PT
oaire.citation.volume32pt_PT
person.familyNameFonseca-Pinto
person.givenNameRui
person.identifier.ciencia-id681D-C547-B184
person.identifier.orcid0000-0001-6774-5363
person.identifier.ridK-9449-2014
person.identifier.scopus-author-id26039086400
rcaap.rightsclosedAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublication7eb9d123-1800-4afd-a2f6-91043353011b
relation.isAuthorOfPublication.latestForDiscovery7eb9d123-1800-4afd-a2f6-91043353011b

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