title: Validation study of portable device for the diagnosis of obstructive sleep apnea according to the new AASM scoring criteria: Watch-PAT 100.
abstract: 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.
authors.affiliation: Department of Otorhinolaryngology-Head and Neck Surgery, Korea University, Seoul, Korea.
authors.forename: Ji Ho
authors.initials: JH
authors.lastname: Choi
authors.forename: Eun Joong
authors.initials: EJ
authors.lastname: Kim
authors.forename: Yang Soo
authors.initials: YS
authors.lastname: Kim
authors.forename: June
authors.initials: J
authors.lastname: Choi
authors.forename: Tae Hoon
authors.initials: TH
authors.lastname: Kim
authors.forename: Soon Young
authors.initials: SY
authors.lastname: Kwon
authors.forename: Heung Man
authors.initials: HM
authors.lastname: Lee
authors.forename: Sang Hag
authors.initials: SH
authors.lastname: Lee
authors.forename: Chol
authors.initials: C
authors.lastname: Shin
authors.forename: Seung Hoon
authors.initials: SH
authors.lastname: Lee
mesh_terms: 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