Evaluation of activity‐based techniques to identify transient arousal in respiratory sleep disorders

Drinnan, Michael; Murray, Alan; White, John; Smithson, A. J.; Gibson, Gretchen; Griffiths, Clive

doi:10.1046/j.1365-2869.1996.d01-71.x

Cited by 14 publications

(13 citation statements)

References 2 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It has been shown that this is caused by disturbed sleep architecture due to arousals [4,5], In unaffected people, sleep disturbances similar to that in obstructive sleep apnea result in the same impairment in vigilance [6], Arousals may not be found during electroen cephalography, and are sometimes only detectable by monitoring the autonomic system [7], Arousals with symptoms similar to those in obstructive sleep apnea can also occur in patients with partial obstruction of the upper airways, usually called 'heavy snoring disease' or 'upper airway resistance syndrom' [8]. In these patients, the diag nosis of obstructed upper airways -in contrast to central breathing disorders -is reliably made with an esophageal catheter [9], Reduction in the chemosensitivity to CO2 is never seen in isloated sleep apnea syndromes without hypoventilation [10].…”

Section: Apneamentioning

confidence: 99%

How Important Is the Differentiation between Apnea and Hypopnea?

Köhler

Schönhofer²

1997

Respiration

View full text Add to dashboard Cite

Apnea and hypopnea during sleep are often viewed as different expressions of the same sleep-related breathing disorder. In our point of view, both symptoms are two different entities which can occur in the same patient. We discuss the hypothesis that sleep apnea is a disorder associated with recurrent arousals and chronic activation of the sympathetic nervous system, leading to daytime sleepiness and disturbances in the autonomic system. Hypoventilation results from reduced alveolar ventilation and is associated with hypercapnia. In rare cases it is caused by genuine disorders of the breathing center, like Odine’s curse. In most cases, hypoventilation is secondary to an underlying disease and a strategy of the body, to avoid respiratory muscle failure. Treatment trials of hypoventilation of the respiratory muscles by stimulating the breathing center failed to be benefical. However, unloading treatment with long-term oxygen and/or home mechanical ventilation improves arterial blood gases, physical activity and prognosis.

show abstract

Section: Apneamentioning

confidence: 99%

How Important Is the Differentiation between Apnea and Hypopnea?

Köhler

Schönhofer²

1997

Respiration

View full text Add to dashboard Cite

show abstract

“…Similarly, the majority of movements during sleep were not associated with an arousal (only 17.5% of wrist movements). Therefore, in accordance with adult data presented by Drinnan et al [181], the paediatric data does not support the theory that arousals consistently coincide with body mobilisation. Furthermore, only some movements that occur during sleep periods can be explained by arousals.…”

Section: Movement and Transient Arousalsupporting

confidence: 46%

“…Further to this, Mograss et al [180] only identified movement using chin and arm EMG, which records muscle activation, not necessarily specific movement types. Drinnan et al [181] evaluated the ability of some physiological markers to detect transient arousals from sleep in 36 adults using raw wrist and ankle accelerometry and left and right tibia EMG. They found that limb movement is somewhat correlated with arousal events and therefore can identify the occurrence of arousals.…”

Section: Discussionmentioning

confidence: 99%

Movement characterisation with accelerometry for improved paediatric sleep assessment

Lamprecht¹

View full text Add to dashboard Cite

Actigraphy is increasingly used to non-invasively estimate sleep quality in children with a suspected sleep disorder. Commercial actigraphs summarise wrist movement, conventionally measured with a uni-axial accelerometer, within a fixed epoch (typically 30s). Wake is subsequently identified as epochs of increased activity and sleep is identified as epochs of inactivity. This classification framework has some distinct limitations: actigraphy misclassifies activity during sleep as wake, and inactivity during wake (i.e. quiet rest) as sleep. In this thesis we will address these limitations by investigating three hypotheses. Firstly, uni-axial accelerometry measured solely at the wrist restricts prediction accuracy, since movements orthogonal to the measurement axis, or occurring elsewhere on the body, cannot be detected. Utilising multisite tri-axial accelerometry may consequently improve sleep and wake prediction. Secondly, there are movement characteristics that can di↵erentiate sleep from wake because the physiological nature of these movements di↵er. Identifying these characteristics may reduce false wake detections. Finally, physiological and pathological events such as apnoeas, hypopneas and transient arousals may be associated with sleep movements that contribute to false wake detections. Exploring this association may consequently explain the presence of some sleep movements.In order to address the hypotheses, 38 participants (27 male, aged 5 16 years) were recruited from children attending the sleep laboratory for suspected sleep-disordered breathing. These children were studied concurrently with polysomnography and a custom system (synchronised to within 0.1s) that recorded raw tri-axial accelerometry data (8 bit, 100Hz, ±2G) simultaneously at the left index fingertip, left wrist, upper thorax, left ankle and left great toe.The first analysis compared the accuracy of predicting sleep and wake epochs with uniaxial, tri-axial, and multisite accelerometry. Tri-axial versions of the conventional 30s epoch summaries were derived and compared to conventional uni-axial accelerometry. Multisite data were explored and verified using two feature selection algorithms with the tri-axial summaries for each accelerometer. Classification performance was significantly improved when incorporating additional accelerometers, and measuring movement with tri-axial accelerometry (Kappa agreement for multisite, tri-axial and uni-axial accelerometry: 0.565(0.231), 0.402(0.141) and 0.268(0.210), p < 0.05). Tri-axial accelerometry has clear benefits with no increase in cost or invasiveness. Although multisite accelerometry provides additional performance benefits, these benefits come at the expense of system complexity and patient discomfort.iii Moving away from epoch-by-epoch predictions, the second analysis assessed wake detection on a movement-by-movement basis. Localised spectral characteristics of raw segmented wrist movements were identified using the discrete wavelet transform. Characteristics that significantly di↵...

show abstract

“…Before and after the artifact, normal respiration cycles are visible. It is known that sudden arousals or short awakenings are potential sources for such type of artifacts since they are often accompanied by body movements causing artifacts in the RE [8]. Also apnoe/hypopnea events followed by sudden hyperpnea are likely to distort the respiratory signal shape [12] and may indicate an onset of wakefulness [11].…”

Section: Methodsmentioning

confidence: 99%

“…for the discrimination of REM and non-REM sleep [7]. Drinnan et al [8] showed that there is a phase change between ribcage and abdominal respiratory effort (RE) signals that are related to apnoe-related arousals. On the other hand, since those belt are very sensitive to movements and interactions, they are also useful to detect motion artifacts, e.g.…”

Section: Introduction and Objectivesmentioning

confidence: 99%

On the Relationship of Arousals and Artifacts in Respiratory Effort Signals

et al. 2014

View full text Add to dashboard Cite

Foussier, J.; Long, X.; Fonseca, P.; Misgeld, B.; Leonhardt, S. Published in:The International Conference on Health Informatics : ICHI 2013, Vilamoura, Portugal on 7-9 November, 2013 DOI:10.1007/978-3-319-03005-0_9Published: 01/01/2013 Document VersionPublisher's PDF, also known as Version of Record (includes final page, issue and volume numbers)Please check the document version of this publication:• A submitted manuscript is the author's version of the article upon submission and before peer-review. There can be important differences between the submitted version and the official published version of record. People interested in the research are advised to contact the author for the final version of the publication, or visit the DOI to the publisher's website.• The final author version and the galley proof are versions of the publication after peer review.• The final published version features the final layout of the paper including the volume, issue and page numbers. Link to publication General rightsCopyright and moral rights for the publications made accessible in the public portal are retained by the authors and/or other copyright owners and it is a condition of accessing publications that users recognise and abide by the legal requirements associated with these rights.• Users may download and print one copy of any publication from the public portal for the purpose of private study or research.• You may not further distribute the material or use it for any profit-making activity or commercial gain • You may freely distribute the URL identifying the publication in the public portal ? Take down policyIf you believe that this document breaches copyright please contact us providing details, and we will remove access to the work immediately and investigate your claim.

show abstract

Evaluation of activity‐based techniques to identify transient arousal in respiratory sleep disorders

Cited by 14 publications

References 2 publications

How Important Is the Differentiation between Apnea and Hypopnea?

How Important Is the Differentiation between Apnea and Hypopnea?

Movement characterisation with accelerometry for improved paediatric sleep assessment

On the Relationship of Arousals and Artifacts in Respiratory Effort Signals

Contact Info

Product

Resources

About