Article
Validation of a contact-free sleep apnea monitor in adults with obstructive sleep apnea
Xue Jianbo, Zhao Rui, Li Jing, Zhao Long, Zhou Bing, Dong Xiaosong, Han Fang
Published 2021-10-12
Cite as Chin J Tuberc Respir Dis, 2021, 44(10): 880-885. DOI: 10.3760/cma.j.cn112147-20210131-00088
Abstract
ObjectiveTo evaluate the diagnostic value of a contact-free sleep apnea monitor in Chinese adults with obstructive sleep apnea (OSA).
MethodsOne hundred and ninety-eight participants with snoring were recruited between July 2018 and May 2019 in Sleep Center of Peking University People′s Hospital, using nocturnal polysomnography (PSG) and contact-free sleep apnea monitor simultaneously. We evaluated the difference between respiratory event index (REI) generated by contact-free sleep apnea monitor and PSG-Apnea-Hypopnea Index (AHI). We calculated the sensitivity and specificity of OSA diagnosis using the contact-free sleep apnea monitor by hypothesis testing for means, Pearson correlation coefficient and Bland-Altman plots. Then, we used the receiver operating characteristic (ROC) curve to find out the best cut-off of OSA diagnosis.
ResultsPSG-AHI and the REI of contact-free sleep apnea monitor showed no statistically significant difference [15.9 (4.7, 40.2) vs. 16.2 (6.1, 40.0), P=0.381], and they were significantly correlated (r=0.914, P<0.05), with mean difference of -0.06 (95%CI:-18.44, 18.31). The ROC curve showed that if REI ≥5 events/h was used as diagnostic criteria, the sensitivity and specificity of diagnosing OSA were 91.2% and 58.0%, respectively. The sensitivity and specificity of the contact-free sleep apnea monitor REI≥13.3 in diagnosing moderate and severe OSA were 90.1% and 71.1%, respectively.
ConclusionThe REI obtained from the contact-free sleep apnea monitor showed a good agreement with the PSG-AHI, and therefore, the contact-free sleep apnea monitor can be used for the screening of patients with moderate and severe OSA.
Key words:
Sleep apnea, obstructive; Polysomnography; Contact-free sleep apnea monitor
Contributor Information
Xue Jianbo
Department of Respiratory and Critical Care Medicine, Peking University People′s Hospital, Beijing 100044, China
Zhao Rui
Department of Respiratory and Critical Care Medicine, Peking University People′s Hospital, Beijing 100044, China
Li Jing
Department of Respiratory and Critical Care Medicine, Peking University People′s Hospital, Beijing 100044, China
Zhao Long
Department of Respiratory and Critical Care Medicine, Peking University People′s Hospital, Beijing 100044, China
Zhou Bing
Department of Respiratory and Critical Care Medicine, Peking University People′s Hospital, Beijing 100044, China
Dong Xiaosong
Department of Respiratory and Critical Care Medicine, Peking University People′s Hospital, Beijing 100044, China
Han Fang
Department of Respiratory and Critical Care Medicine, Peking University People′s Hospital, Beijing 100044, China
