Sleep Apnea Syndrome (SAS) is a common pathology affecting between 4 and 8% of the general population. It aggravates morbidity and cardio-metabolic mortality and is responsible for accidents related to vigilance disorders. It is estimated that 80% of SAS cases are not diagnosed and therefore not treated. It is however impracticable to propose a diagnostic test of polygraphy (PG) or polysomnography (PSG) to every patient because of the cost and insufficient availability of these exams. It would therefore be useful to carry out a screening test before directing the patient to a complete test. Several simplified polygraph systems with 2 or 3 channels have been proposed (nasal cannula, oximetry, heart rate) but they generally record only one night and remain intrusive enough to perturb the sleep. The Withings Sleep is a non-contact device, along with an airbag placed under the mattress, which allows screening of SAS from four signals: movement, breathing, heart rate and snoring. The objective of the present study is to validate the diagnostic performance of the Withings Sleep for the detection of SAS compared to PSG.
Study Type
OBSERVATIONAL
Enrollment
200
Service de pneumologie - Laboratoire du sommeil - CHU St-Pierre
Brussels, Belgium
Service Explorations Fonctionnelles - Centre de Médecine du Sommeil - Hôpital Antoine Béclère
Clamart, France
Sensitivity and specificity of Withings Sleep at AHI threshold value of 15/h in PSG
Sensitivity and specificity for SAS detection by Withings Sleep compared to polysomnography (PSG) at apnea-hypopnea index (AHI) threshold value of 15/h in PSG.
Time frame: immediately after intervention
Sensitivity and specificity of Withings Sleep at AHI threshold value of 30/h in PSG
Sensitivity and specificity for SAS detection by Withings Sleep compared to PSG at AHI threshold value of 30/h in PSG.
Time frame: immediately after intervention
Sensitivity and specificity of polygraphy (PG)
Sensitivity and specificity for SAS detection by polygraphy (PG) compared to PSG at AHI threshold values of 15/h in PSG.
Time frame: immediately after intervention
Sensitivity and specificity of PG
Sensitivity and specificity for SAS detection by PG compared to PSG at AHI threshold values of 30/h in PSG.
Time frame: immediately after intervention
Accuracy of Withings Sleep to estimate total sleep time (TST) given by PSG
Bias and mean absolute error (MAE)
Time frame: immediately after intervention
Accuracy of Withings Sleep to estimate sleep efficiency (SE) given by PSG
Bias and MAE
Time frame: immediately after intervention
Accuracy of Withings Sleep to estimate wake after sleep onset (WASO) given by PSG
Bias and MAE
Time frame: immediately after intervention
Influence of the position of the sleeper (decubitus dorsal vs decubitus latero-ventral) on the error of the AHI predicted by Withings Sleep compared with PSG
Mean group difference between sleepers more than 50% of TST in decubitus dorsal or not.
Time frame: immediately after intervention
Impact of the proportion of hypopnea events on the performance of Withings Sleep
Mean group difference between patients with a majority of apnea events and patients with a majority of hypopnea events.
Time frame: immediately after intervention
Mean group difference between patients with central or mixed apnea and patients with obstructive apnea events.
Mean group difference between patients with a majority of central or mixed apnea events and patients with a majority of obstructive apnea events.
Time frame: immediately after intervention
Reliability of Withings Sleep
Rate of unusable or lost nights.
Time frame: immediately after intervention
Reliability of PSG
Rate of unusable or lost nights.
Time frame: immediately after intervention
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