Accuracy of automatic analysis of ambulatory recordings of nocturnal breathing disorders is significantly instrumentation dependent

Obstructive sleep apnoea (OSA) is generally diagnosed with ambulatory recordings. Although reliability of automated analysis has been investigated, suitability of one single analysis software for use with different devices is unclear. Here, validity of automatic analysis of recordings with two ambul...

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Bibliographic Details
Published in:Journal of medical engineering & technology 2009, Vol.33 (5), p.386-393
Main Authors: Tiihonen, P., Hukkanen, T., Tuomilehto, H., Mervaala, E., Pääkkönen, A., Töyräs, J.
Format: Article
Language:English
Subjects:
Adult
ambulatory
automatic analysis
central apnoea
Female
home recording
Humans
Male
Middle Aged
Polysomnography - instrumentation
Polysomnography - methods
portable monitoring
Signal Processing, Computer-Assisted - instrumentation
Sleep Apnea Syndromes - classification
Sleep Apnea Syndromes - diagnosis
Sleep apnoea
Software
Statistics, Nonparametric
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Summary:Obstructive sleep apnoea (OSA) is generally diagnosed with ambulatory recordings. Although reliability of automated analysis has been investigated, suitability of one single analysis software for use with different devices is unclear. Here, validity of automatic analysis of recordings with two ambulatory devices and reliability of automatic analysis in detection of mixed and central apnoeas are investigated through 100 and 167 recordings with Venla and Embletta™ devices, respectively. Recordings were analysed automatically with Somnologica™ 3.2 and compared to manual analysis. Significant differences were seen between devices in classification of the severity of OSA when automatic analysis was applied. 65.4% and 11.4% of patients with mild obstructive sleep apnoea received false negative diagnosis with Venla and Embletta™, respectively. Further, as automatic analysis was seen to have major difficulty in detection and classification of central and mixed apnoeas, manual analysis is suggested when these forms of disease are suspected.
ISSN:0309-1902
1464-522X
DOI:10.1080/03091900902739999