Evaluation of a portable device based on peripheral arterial tone in the detection of obstructive sleep apnea
10.3760/cma.j.issn.1673-0860.2012.02.006
- VernacularTitle:腕式睡眠监测仪在阻塞性睡眠呼吸暂停低通气综合征诊断中的应用
- Author:
Juan ZHANG
1
;
Chun-Yan WANG
;
Ning-Yu WANG
;
Jun-Qing LIU
;
Jing-Yan DU
;
Guo-Xia ZHOU
;
Zhan-Feng YAN
;
Xiao-Hui WEN
;
Li LI
;
Jin-Feng LIU
Author Information
1. 首都医科大学附属北京朝阳医院
- Keywords:
Sleep apnea,obstructive;
Polysomnography;
Monitoring,ambulatory
- From:
Chinese Journal of Otorhinolaryngology Head and Neck Surgery
2012;47(2):112-116
- CountryChina
- Language:Chinese
-
Abstract:
Objective To assess the accuracy of a wrist-worn device (Watch-PAT 200) in the diagnosis of obstructive sleep apnea syndrome (OSAHS). Methods Forty-three adult subjects with suspected OSAHS simultaneously had a standard in-laboratory polysomnogram (PSG) and wore the WatchPAT 200 during a full-night recording.PSG sleep and respiratory events were scored according to standard criteria. The PSG recordings were blindly manually analyzed, while Watch-PAT data were scored automatically based on the algorithm developed previously.Results The mean age of the subjects was (42.2 ± 12.2) years ((x) ±s),and mean body mass index was (28.0 ±3.9) kg/m2.Mean PSG apnea hypopnea index (AHI) was (34.9 ± 29.9) events per hour,and mean PAT-AHI was (36.0 ± 29.2) events per hour.There was a significant correlation between PAT AHI and AHI by PSG (r =0.931,P ＜0.01 ).A Bland-Altman plot of PAT AHI and PSG AHI was also used to assess the accuracy of Watch-PAT 200.At lower levels of AHI,PAT tended to overestimate disease severity,while at higher levels of AHI,Watch-PAT underestimated severity.To assess sensitivity and specificity of Watch-PAT,constructed receiver operator characteristic curves using a variety of AHI threshold values (5,15 and 30 events per hour).For AHI ≥5events per hour as threshold value,the Watch-PAT diagnosing rate was 93％,and sensitivity as well as specificity were 94.7％ and 80.0％.The misdiagnosis rate and missed diagnosis rate were 20.0％ and 5.3％.Optimal combinations of sensitivity and specificity for the AHI threshold values ( 15 and 30 events per hour) were 82.6％ and 100.0％,95.0％ and 95.7％ respectively.Conclusion The Watch-PAT 200 may offer an accurate,robust,and reliable ambulatory method for the detection of OSAHS,with minimal patient discomfort.
