The efficacy of Watch PAT in obstructive sleep apnea syndrome diagnosis

Körkuyu, Emine; Düzlü, Mehmet; Karamert, Recep; Tutar, Hakan; Yılmaz, Metin; Çiftçi, Bülent; Fırat, Selma

doi:10.1007/s00405-014-3097-0

Cited by 28 publications

(23 citation statements)

References 15 publications

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“…We believe portable sleep study is appropriate for treatment follow‐up once the diagnosis of OSA has been established. In terms of AHI validity and reliability, high validity and reliability were reported compared with polysomnography . Therefore, we consider the efficacy for sleep‐disordered breathing to be of minimal influence.…”

Section: Discussionmentioning

confidence: 99%

“…The sleep study was performed with the Watch‐PAT (Itamar Medical Caesarea, Israel), an FDA‐approved portable diagnostic device, consisting of peripheral arterial tonometry (PAT) probe, a wrist‐mounted device and oxygen saturation monitor, with snoring monitor to assess the state of OSA at baseline and follow‐up. The Watch‐PAT was chosen for this study because it does not require a nasal pressure or airflow sensor, which may disturb Nastent fitting.…”

Section: Methodsmentioning

confidence: 99%

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The efficacy of nasal airway stent (Nastent) on obstructive sleep apnoea and prediction of treatment outcomes

Okuno

Minagi

Ikai

et al. 2018

J of Oral Rehabilitation

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Summary Background Obstructive sleep apnoea (OSA) is characterised by recurrent episodes of partial or complete upper airway collapse during sleep and is highly prevalent in the general population. The nasopharyngeal airway stent (Nastent) is a specifically designed, preformed silicone tube that intends to maintain the upper airway patency during sleep and reduce snoring and sleep apnoea. Objective(s) The purpose of this study was to determine the efficacy of Nastent treatment and examine predictors for Nastent treatment outcomes in patients with OSA. Methods Consecutive thirty patients were enrolled in this study. Cephalometric radiographs were obtained to analyse the pharyngeal and craniofacial morphology. Before and after Nastent treatment, we evaluated OSA using a portable sleep study. Results Twenty‐nine subjects completed this study. There were significant decreases in the respiratory event index (REI) (22.4 ± 14.1 to 15.7 ± 10.4, P < 0.01) and a significant increase in the lowest SpO2 (81.9 ± 7.5 to 86.6 ± 4.8, P < 0.01) by Nastent treatment. Subjects were divided into responders and non‐responders based on reduction in REI of >50% compared with baseline REI. We evaluated the ratio of inferior airway width and middle airway width (IAW/MAW) on cephalograms as the index of the narrowest airway site. The IAW/MAW was significantly higher in responders than in non‐responders (1.4 ± 0.9 vs 0.9 ± 0.4, P < 0.01) and predicted treatment responders with high accuracy (sensitivity: 90.9%, specificity: 88.9%, when IAW/MAW was set at 1.10). Conclusions The Nastent device improved OSA, and a narrower velopharynx than hypopharynx predicted treatment response with a good sensitivity and specificity.

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Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

The efficacy of nasal airway stent (Nastent) on obstructive sleep apnoea and prediction of treatment outcomes

Okuno

Minagi

Ikai

et al. 2018

J of Oral Rehabilitation

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“…Several portable home sleep monitoring devices have also been developed to evaluate sleep staging, overall sleep time, and sleep quality. [10][11][12][13] Of these, the EarlySense (ES) contact-free sensor has been validated for measuring movement, heart rate, and respiration 14 and is currently used in hospitals in the United States. 15,16 The primary objective of the current study was to validate the accuracy of a new home-adapted sensor (Figure 1) for reliably determining sleep/wake state and sleep parameters as compared to PSG.…”

Section: Introductionmentioning

confidence: 99%

Validation of Contact-Free Sleep Monitoring Device with Comparison to Polysomnography

Tal

Shinar

Shaki

et al. 2017

Journal of Clinical Sleep Medicine

120

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Study Objectives: To validate a contact-free system designed to achieve maximal comfort during long-term sleep monitoring, together with high monitoring accuracy. Methods: We used a contact-free monitoring system (EarlySense, Ltd., Israel), comprising an under-the-mattress piezoelectric sensor and a smartphone application, to collect vital signs and analyze sleep. Heart rate (HR), respiratory rate (RR), body movement, and calculated sleep-related parameters from the EarlySense (ES) sensor were compared to data simultaneously generated by the gold standard, polysomnography (PSG). Subjects in the sleep laboratory underwent overnight technician-attended full PSG, whereas subjects at home were recorded for 1 to 3 nights with portable partial PSG devices. Data were compared epoch by epoch. Results: A total of 63 subjects (85 nights) were recorded under a variety of sleep conditions. Compared to PSG, the contact-free system showed similar values for average total sleep time (TST), % wake, % rapid eye movement, and % non-rapid eye movement sleep, with 96.1% and 93.3% accuracy of continuous measurement of HR and RR, respectively. We found a linear correlation between TST measured by the sensor and TST determined by PSG, with a coefficient of 0.98 (R = 0.87). Epoch-by-epoch comparison with PSG in the sleep laboratory setting revealed that the system showed sleep detection sensitivity, specificity, and accuracy of 92.5%, 80.4%, and 90.5%, respectively. Conclusions: TST estimates with the contact-free sleep monitoring system were closely correlated with the gold-standard reference. This system shows good sleep staging capability with improved performance over accelerometer-based apps, and collects additional physiological information on heart rate and respiratory rate.

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“…Testing SleepStrip reported a correlation of 0.71 between the device's results and PSG results [5]. Validation studies comparing the WatchPAT calculated AHI to PSG's AHI reported an intra-class correlation coefficient (ICC) of 0.93 [32] and Spearman's r = 0.802 [33].…”

Section: Discussionmentioning

confidence: 99%

3D Camera and Pulse Oximeter for Respiratory Events Detection

Coronel

Wiesmeyr

Garn

et al. 2021

IEEE J. Biomed. Health Inform.

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The purpose of this study was to derive a respiratory movement signal from a 3D time-of-flight camera and to investigate if it can be used in combination with SpO2 to detect respiratory events comparable to polysomnography (PSG) based detection. Methods: We derived a respiratory signal from a 3D camera and developed a new algorithm that detects reduced respiratory movement and SpO2 desaturation to score respiratory events. The method was tested on 61 patients' synchronized 3D video and PSG recordings. The predicted apnea-hypopnea index (AHI), calculated based on total sleep time, and predicted severity were compared to manual PSG annotations (manualPSG). Predicted AHI evaluation, measured by intraclass correlation (ICC), and severity classification were performed. Furthermore, the results were evaluated by 30second epoch analysis, labelled either as respiratory event or normal breathing, wherein the accuracy, sensitivity, specificity and Cohen's kappa were calculated. Results: The predicted AHI scored an ICC r = 0.94 (0.90-0.96 at 95% confidence interval, p < 0.001) compared to manualPSG. Severity classification scored 80% accuracy, with no misclassification by more than one severity level. Based on 30-second epoch analysis, the method scored a Cohen's kappa= 0.72, accuracy = 0.88, sensitivity = 0.80, and specificity = 0.91. Conclusion: Our detection method using SpO2 and 3D camera had excellent reliability and substantial agreement with PSG-based scoring. Significance: This method showed the potential to reliably detect respiratory events without airflow and respiratory belt sensors, sensors that can be uncomfortable to patients and susceptible to movement artefacts.

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The efficacy of Watch PAT in obstructive sleep apnea syndrome diagnosis

Cited by 28 publications

References 15 publications

The efficacy of nasal airway stent (Nastent) on obstructive sleep apnoea and prediction of treatment outcomes

The efficacy of nasal airway stent (Nastent) on obstructive sleep apnoea and prediction of treatment outcomes

Validation of Contact-Free Sleep Monitoring Device with Comparison to Polysomnography

3D Camera and Pulse Oximeter for Respiratory Events Detection

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