Validating the Watch-PAT for Diagnosing Obstructive Sleep Apnea in Adolescents

Abstract

Study Objectives: The aim of this study was to evaluate the accuracy of the Watch-PAT 200 (WP200) for diagnosing obstructive sleep apnea (OSA) in adolescents compared with polysomnography (PSG) according to the respiratory rules for children (RRC) and adults (RRA). Methods: A total of 38 adolescents (mean age 15.1 +/- 1.4 years; male 28 [73.7%]; body mass index [BMI] 23.1 +/- 5.5 kg/m(2)) with suspected OSA were assessed with the WP200 and standard PSG simultaneously between July 2014 and September 2015 at a tertiary university hospital. All WP200 data were assessed according to the automatic algorithm, and PSG data were scored according to the RRC and RRA. We examined the correlation, agreement, and concordance in the apnea-hypopnea index (AHI) and minimum arterial oxygen saturation (mSaO(2)) between the WP200 and PSG-RRC or PSG-RRA. Results: There were high correlations (r = .945, P < .001 [AHI-WP200 versus AHI-PSG-RRC]; r = .945, P < .001 [AHI-WP200 versus AHI-PSG-RRA]; r = .921, P < .001 [mSaO(2)-WP versus mSaO(2)-PSG]) and good agreements in AHI and mSaO(2) between the WP200 and PSG. In addition, there were high concordances in AHI severity (Kendall tau-b = .848, P < .001 [AHI-WP200 versus AHI-PSG-RRC]; Kendall tau-b = .944, P < .001 [AHI-WP200 versus AHI-PSG-RRA]) between the WP200 and PSG. Conclusions: The WP200 may be a clinically reliable tool for diagnosing OSA in adolescents.