Validation study of portable device for the diagnosis of obstructive sleep apnea according to the new AASM scoring criteria: Watch-PAT 100.
CONCLUSIONS
Watch-PAT may provide an accurate and clinically effective portable monitoring method for the diagnosis of obstructive sleep apnea (OSA).


OBJECTIVE
This study was designed to assess the accuracy and clinical efficacy of a wrist-worn portable device (Watch-PAT 100) to diagnose OSA.


METHODS
Twenty-seven participants with suspected OSA underwent full polysomnography (PSG). Finally, 25 subjects successfully underwent portable monitoring using Watch-PAT after full PSG. The study population consisted of 21 males and 4 females, mean age 40.9 +/- 11.2 years (range 21-59). Mean body mass index (BMI) was 26.2 +/- 2.6 kg/m(2) (range 21.2-32.3). All PSG were manually scored according to the new scoring manual of the American Academy of Sleep Medicine (2007) and the Watch-PAT data were analyzed by the automatic algorithm.


RESULTS
There was a high correlation of apnea-hypopnea index (AHI) (r = 0.94, p < 0.001) and lowest oxygen saturation (LSAT) (r = 0.90, p < 0.001) between the PSG and the Watch-PAT. A good agreement was also found between PSG AHI, PSG LSAT and PAT AHI, PAT LSAT, respectively. There was a significantly high concordance of the severity of AHI (Kendall tau-b = 0.897, p < 0.001) between the PSG and the Watch-PAT.
Choi
Ji Ho
JH
Department of Otorhinolaryngology-Head and Neck Surgery, Korea University, Seoul, Korea.
Kim
Eun Joong
EJ
Kim
Yang Soo
YS
Choi
June
J
Kim
Tae Hoon
TH
Kwon
Soon Young
SY
Lee
Heung Man
HM
Lee
Sang Hag
SH
Shin
Chol
C
Lee
Seung Hoon
SH
D000328:Adult; D005260:Female; D006339:Heart Rate; D006801:Humans; D008297:Male; D008875:Middle Aged; D010092:Oximetry; D017286:Polysomnography / Q000295:instrumentation*; D011237:Predictive Value of Tests; D012680:Sensitivity and Specificity; D012720:Severity of Illness Index; D012815:Signal Processing, Computer-Assisted / Q000295:instrumentation*; D020181:Sleep Apnea, Obstructive / Q000175:diagnosis*; D014661:Vasoconstriction; D014953:Wrist