J Clin Monit Comput - Capability of a neck worn device to measure sleep/wake, airway position, and differentiate benign snoring from obstructive sleep apnea.

Tópicos

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Resumo

To evaluate the accuracy of a neck-worn device in measuring sleep/wake, detecting supine airway position, and using loud snoring to screen for obstructive sleep apnea. Study A included 20 subjects who wore the neck-device during polysomnography (PSG), with 31 records obtained from diagnostic and split-night studies. Study B included 24 community-based snorers studied in-home for up to three-nights with obstructive sleep apnea (OSA) severity measured with a validated Level III recorder. The accuracy of neck actigraphy-based sleep/wake was measured by assessing sleep efficiency (SE). Differences in sleep position measured at the chest and neck during PSG were compared to video-editing. Loud snoring acquired with an acoustic microphone was compared to the apnea-hypopnea index (AHI) by- and acrosspositions. Over-reported SE by neck actigraphy was inversely related to OSA severity. Measurement of neck and chest supine position were highly correlated with video-edits (r=0.93, 0.78). Chest was bias toward over-estimating supine time while the majority of neck-device supine position errors occurred during CPAP titrations. Snoring was highly correlated with the overall, supine, and non-supine PSG-AHI (r=0.79, 0.74, 0.83) and was both sensitive and specific in detecting overall, supine, and non-supine PSGAHI>10 (sensitivity=81, 88, 82%; specificity=87, 79, 100%). At home sleep testing-AHI>10, the sensitivity and specificity of loud snoring was superior when users were predominantly non-supine as compared to baseline (sensitivity=100, 92%; specificity=88, 77%). Neck actigraphy appears capable of estimating sleep/wake. The accuracy of supine airway detection with the neck-device warrants further investigation. Measurement of loud snoring appears to provide a screening tool for differentiating positional apneic and benign snorers.

Resumo Limpo

evalu accuraci neckworn devic measur sleepwak detect supin airway posit use loud snore screen obstruct sleep apnea studi includ subject wore neckdevic polysomnographi psg record obtain diagnost splitnight studi studi b includ communitybas snorer studi inhom threenight obstruct sleep apnea osa sever measur valid level iii record accuraci neck actigraphybas sleepwak measur assess sleep effici se differ sleep posit measur chest neck psg compar videoedit loud snore acquir acoust microphon compar apneahypopnea index ahi acrossposit overreport se neck actigraphi invers relat osa sever measur neck chest supin posit high correl videoedit r chest bias toward overestim supin time major neckdevic supin posit error occur cpap titrat snore high correl overal supin nonsupin psgahi r sensit specif detect overal supin nonsupin psgahi sensit specif home sleep testingahi sensit specif loud snore superior user predomin nonsupin compar baselin sensit specif neck actigraphi appear capabl estim sleepwak accuraci supin airway detect neckdevic warrant investig measur loud snore appear provid screen tool differenti posit apneic benign snorer

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