An automatic ambulatory device for detection of AASM defined arousals from sleep: the WP100

Pillar, Giora; Bar, Amir; Betito, Michal; Schnall, Robert P.; Dvir, Itsik; Sheffy, Jacob; Lavie, Peretz

doi:10.1016/s1389-9457(02)00254-x

Cited by 92 publications

(63 citation statements)

References 31 publications

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“…Watch-PAT identifi ed the drivers with RDI > 15 with 89.1% sensitivity and 76.9% specifi city. There are studies confi rming the validation of Watch-PAT device simultaneously with PSG, 5,[8][9][10][11][12] detection of the arousals, 6,13 and assessment of CPAP effi cacy. 14,15 This is the fi rst study evaluating the reliability of Watch-PAT in a particular group, in this case, highway bus drivers.…”

Section: Discussionmentioning

confidence: 99%

“…Most of the studies are with Watch-PAT 100 device. 5,6,[8][9][10][11][12][13][14][15]18,19 Recently, Watch-PAT 200 has been shown to provide quick diagnosis in OSA and to be valid in the diagnosis of OSA during pregnancy. 20,21 Our particular question was the reliability of this device in the diagnosis of obstructive sleep apnea in highway bus drivers.…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Reliability of the Watch-PAT 200 in Detecting Sleep Apnea in Highway Bus Drivers

Yüceege

Fırat²,

Demir³

et al. 2013

Journal of Clinical Sleep Medicine

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bRIEF SUmmARYCurrent knowledge/Study Rationale: Polysomnography is mandatory in drivers older than 45 years old and those with snoring, witnessed apnea and/or day time sleepiness who are younger than 45 years old, before getting a highway bus driver licence in Turkey, but the number of sleep centers are not enough to test all the applicants. This study has been done to test the accuracy of Watch-PAT device in detecting sleep disordered breathing among the highway bus drivers.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Reliability of the Watch-PAT 200 in Detecting Sleep Apnea in Highway Bus Drivers

Yüceege

Fırat²,

Demir³

et al. 2013

Journal of Clinical Sleep Medicine

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“…5 It has been shown to accurately detect OSA (in laboratory and ambulatory settings), [5][6][7][8] autonomic arousals, 9 and sleep/wake status. 10 The validity of using PAT and actigraphy signals derived from the PAT recorder to detect REM 11 and light/deep 12 sleep has also been demonstrated in two small studies.…”

Section: S C I E N T I F I C I N V E S T I G a T I O N Smentioning

confidence: 99%

Sleep Staging Based on Autonomic Signals: A Multi-Center Validation Study

Hedner

White

Malhotra

et al. 2011

Journal of Clinical Sleep Medicine

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123

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Study Objectives: One of the most important caveats of ambulatory devices is the inability to record and stage sleep. We assessed an algorithm determining 4 different stages: wake, light sleep, deep sleep, and REM sleep using signals derived from the portable monitor Watch-PAT100 (PAT recorder). Methods: Participants (38 normal subjects and 189 patients with obstructive sleep apnea [OSA]) underwent simultaneous overnight recordings with polysomnography (PSG) and the PAT recorder in a study originally designed to assess the accuracy of the PAT recorder in diagnosing OSA. Light/deep sleep and REM sleep from the PAT recorder recording were automatically scored based on features extracted from time series of peripheral arterial tone amplitudes and inter pulse periods. The PSG scored sleep stages 1 and 2 were classified as light sleep for epoch-by-epoch comparisons. Results:The overall agreement in detecting light/deep and REM sleep were 88.6% ± 5.9% and 88.7% ± 5.5%, respectively. There was a good agreement between PSG and the PAT recorder in quantifying sleep efficiency (78.4% ± 9.9% vs. 78.8% ± 13.4%), REM latency (237 ± 148 vs. 225 ± 159 epochs), and REM percentage (14.4% ± 6.5% vs. 19.3% ± 8.7%). OSA severity did not affect the sensitivity and specificity of the algorithm. The Cohen κ coefficient for detecting all sleep stages: sleep from wake, REM from NREM sleep, and deep from light sleep were 0.48, 0.55, 0.59, and 0.46, respectively. Conclusions: Analysis of autonomic signals from the PAT recorder can detect sleep stages with moderate agreement to more standard techniques in normal subjects and OSA patients. This novel algorithm may provide insights on sleep and sleep architecture when applying the PAT recorder for OSA diagnosis.

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“…Those with PET who had to stay in the hospital wore the device in the obstetrics department and the control females took it to their home. Since the differences expected between the groups may be subtle and based mainly on flow limitation and not necessarily complete apnoeas, the current methodology represents a relative advantage as it is very sensitive to autonomic changes, such as those seen in the termination of flow limitation periods [33]. In fact, the current authors did attempt a study using full overnight polysomnography, but discontinued it due to poor enrolment.…”

Section: Sdb and Ed In Pet D Yinon Et Almentioning

confidence: 99%

Pre-eclampsia is associated with sleep-disordered breathing and endothelial dysfunction

Yinon

Löwenstein²,

Suraya³

et al. 2006

Eur Respir J

141

132

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Pre-eclamptic toxaemia (PET) may be associated with both endothelial dysfunction (ED) and sleep-disordered breathing (SDB). It was hypothesised that females with PET would demonstrate both SDB and ED, and that a correlation between these two would suggest a potential causative association.A total of 17 females with PET and 25 matched females with uncomplicated pregnancy were studied. They underwent a nocturnal ambulatory sleep study (using Watch_PAT100) and noninvasive evaluation of endothelial function utilising the reactive hyperaemia test (using Endo_PAT 2000). A higher ratio of post-to pre-occlusion pulse-wave amplitude (endothelial function index (EFI)) indicated better endothelial function.Females with PET had a significantly higher respiratory disturbance index (RDI) and lower EFI than controls (18.4¡8.4 versus 8.3¡1.3?h -1 , and 1.5¡0.1 versus 1.8¡0.1, respectively). Blood pressure significantly correlated with RDI and with EFI. EFI tended to correlate with RDI.In conclusion, these results suggest that both sleep-disordered breathing and endothelial dysfunction are more likely to occur in females with pre-eclamptic toxaemia than in females with uncomplicated pregnancies. The current authors speculate that respiratory disturbances contribute to the functional abnormality of the blood vessels seen in females with pre-eclamptic toxaemia, although causality cannot be determined based on this study.

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An automatic ambulatory device for detection of AASM defined arousals from sleep: the WP100

Cited by 92 publications

References 31 publications

Reliability of the Watch-PAT 200 in Detecting Sleep Apnea in Highway Bus Drivers

Reliability of the Watch-PAT 200 in Detecting Sleep Apnea in Highway Bus Drivers

Sleep Staging Based on Autonomic Signals: A Multi-Center Validation Study

Pre-eclampsia is associated with sleep-disordered breathing and endothelial dysfunction

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