Validation of a Portable Sleep Apnea Monitoring Device

Man, Godfrey C.W.; Kang, Bhavandeep V.

doi:10.1378/chest.108.2.388

Cited by 56 publications

(30 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…For a PSG cut-off point of 10 events per hour of sleep, a portable respiratory recording device of 6 events per hour showed a sensitivity and specificity of 95% and 92%, respectively. Moreover, other authors obtained similar results [55][56][57][58]. When the diagnostic accuracy of a type 3 monitor was analysed [59], the authors found no differences in the AHI per hour in bed between PSG and home RP (2¡5 events?h -1 in bed), although there were differences per hour of sleep.…”

Section: Type 3 Sleep Study (Unattended Rp)supporting

confidence: 59%

Ambulatory monitoring in the diagnosis and management of obstructive sleep apnoea syndrome

Corral‐Peñafiel

Pépin

Barbé

2013

European Respiratory Review

View full text Add to dashboard Cite

Obstructive sleep apnoea (OSA) is a highly prevalent disorder associated with complications such as arterial hypertension, cardiovascular diseases and traffic accidents. The resources allocated for OSA are insufficient and OSA is a significant public health problem. Portable recording devices have been developed for the detection of OSA syndrome and have proved capable of providing an equivalent diagnosis to in-laboratory polysomnography (PSG), at least in patients with a high pre-test probability of OSA syndrome. PSG becomes important in patients who have symptoms and certain comorbidities such as chronic obstructive pulmonary disease or stroke, as well as in patients with a clinical history suggesting a different sleep disorder. Continuous positive airway pressure is the most effective treatment in OSA. Ambulatory monitoring of the therapeutic modalities has been evaluated to enhance the care process and reduce costs compared to the conventional approach, without sacrificing efficiency. This review evaluates the role of portable monitoring devices in the diagnostic process of OSA and the search for alternative strategies based on ambulatory management protocols. @ERSpublications High pre-test OSAS patients can use unattended type 2 and portable monitoring devices at home

show abstract

Section: Type 3 Sleep Study (Unattended Rp)supporting

confidence: 59%

Ambulatory monitoring in the diagnosis and management of obstructive sleep apnoea syndrome

Corral‐Peñafiel

Pépin

Barbé

2013

European Respiratory Review

View full text Add to dashboard Cite

show abstract

“…The disadvantage of such a procedure is a somewhat more uncomfortable situation for the patient due to the doubling of the sensors. However, previous investigators used the same methodology with no apparent adverse results [3, 6, 8]. A limitation of this study is the simultaneous use of ambulatory and PSG technique only in sleep laboratory conditions.…”

Section: Discussionmentioning

confidence: 97%

“…It is problematic to interpret sensitivity and specificity values with fixed thresholds for a screening device, since clinical findings also influence the decision of whether the subject suffers from OSAS or not. However, thresholds have been used in other publications to examine screening devices [3, 5, 9, 21, 25, 26]. …”

Section: Discussionmentioning

confidence: 99%

“…This stepwise procedure of diagnosing SAS [1]is widely used for ambulatory and in-hospital monitoring. The high demand for such devices is also demonstrated in the variety of commercially available systems, such as EdenTec 3711 (Nellcor, Eden Praire, Minn., USA), Mesam, Mesam IV and Poly-Mesam (MAP, Munich, Germany), Medilog MPA 2 (Oxford Med., Oxon, UK), Poly-G and Sleep I/T (CNS; Chantassen, Minn., USA), Somnolog 3 (Ventec Aps, Denmark), CID 102 (Cidelec, France), NightWatch System (Healthdyne, Brussels, Belgium) [2, 3, 4, 5, 6, 7, 8, 9, 10, 11]. Most of these systems contain software algorithms which allow automated analysis of registered data.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Automated Analysis of Data Is Inferior to Visual Analysis of Ambulatory Sleep Apnea Monitoring

Fietze

Glos²,

Röttig³

et al. 2002

Respiration

View full text Add to dashboard Cite

Background: Many ambulatory sleep apnea monitoring devices are equipped with software which allows an automated analysis of data as well as a visual analysis. Objective: The Merlin system which records heart rate, snoring sound, efforts, oronasal flow, body position and oxygen saturation was investigated to identify proper parameter settings for the automated analysis and to compare the automated with the visual analysis in patients with mild obstructive sleep apnea syndrome (OSAS). Sensitivity and specificity of the visual and automated analysis of ambulatory monitoring in comparison with visual polysomnographic (PSG) analysis were determined. Methods and Results: First, we tried to find the optimal parameters for the automated analysis, using 7 different settings in 17 OSAS patients. Furthermore, we applied the optimized setting to 66 OSAS patients who were admitted (age 50.9 ± 9.9 years, BMI 32.9 ± 5 kg/m²), and compared the results with the visual analysis of raw data. The patients slept for one night in the sleep laboratory with Merlin and PSG simultaneously to compare the visual and automated analysis of Merlin data with results from the visual analysis of PSG. Automated analysis leads to an underestimation of the respiratory disturbance index (RDI; p < 0.001) compared with both the visual analysis and results of PSG. Using a cutoff level of 5 apneas and hypopneas/h for the diagnosis of OSAS, the sensitivity of Merlin with the automated analysis is 40.6% and the specificity is 100%. With a cutoff level of 15/h, sensitivity and specificity rose to 91.3 and 100%, respectively, which is comparable to the visual analysis. Conclusion: Merlin is a reliable device for detection of sleep-related breathing disorders, but recordings should be analyzed visually, especially in patients with a low RDI.

show abstract

“…The devices Medilog [17], Vitalog PMS-8 [18], SCSB [19], MESAM IV [20], MicroDigitrapper-S [21], PolyG [22], CID-102 [23], and POLY-MESAM [24] are the most well standardised and validated. However, despite this monitoring systems have been used for measurement of sleep-related breathing disturbances in epidemiological studies [25] as well as for titrating CPAP for the treatment of SAS [26].…”

Section: Discussionmentioning

confidence: 99%

Comparison of a cardiorespiratory deviceversuspolysomnography for diagnosis of sleep apnoea

Calleja¹,

Esnaola²,

Rubio³

et al. 2002

Eur Respir J

View full text Add to dashboard Cite

Comparison of a cardiorespiratory device versus polysomnography for diagnosis of sleep apnoea. J.M. Calleja, S. Esnaola, R. Rubio, J. Durán. #ERS Journals Ltd 2002. ABSTRACT: This study assessed the accuracy of a cardiorespiratory monitoring device versus polysomnography for the diagnosis of suspected sleep apnoea/hypoponea syndrome (SAS).A total of 86 patients (89% male, mean age 52 yrs) that had been referred to a sleep laboratory with a clinical diagnosis of SAS underwent cardiorespiratory polygraphy in an unattended mode using an ambulatory device (MERLIN). Analysis was carried out both automatically and manually. Conventional overnight full-channel polysomnography was performed simultaneously.Valid polygraphical recordings were obtained from 79 patients. The mean ¡ SD apnoea/hypopnoea index (AHI) was 34.4 ¡ 29.2. The results obtained with manual scoring were superior to automatic scoring for all AHI thresholds. For an AHI of o5, which is diagnostic SAS, the optimum cut-off value for the manual respiratory event index was 6.7 and the cardiorespiratory monitoring device had 97.1% sensitivity and 90.9% specificity. Correct classification according to the different cut-off points obtained via polysomnography and the corresponding cut-off points in the MERLIN manual index were confirmed in 90-96% of patients.The MERLIN device is a useful diagnostic approach for the initial assessment of adult patients with clinical suspicion of sleep apnoea/hypopnoea syndrome. Manual scoring is clearly better than automatic scoring in terms of agreement with the apnoea/ hypopnoea index and to discern patients with sleep apnoea/hypopnoea syndrome.

show abstract

Validation of a Portable Sleep Apnea Monitoring Device

Cited by 56 publications

References 17 publications

Ambulatory monitoring in the diagnosis and management of obstructive sleep apnoea syndrome

Ambulatory monitoring in the diagnosis and management of obstructive sleep apnoea syndrome

Automated Analysis of Data Is Inferior to Visual Analysis of Ambulatory Sleep Apnea Monitoring

Comparison of a cardiorespiratory deviceversuspolysomnography for diagnosis of sleep apnoea

Contact Info

Product

Resources

About