title: [The value of short daytime ApneaGraph in assessing obstructive sleep apnea-hypopnea syndrome].
abstract: OBJECTIVE
  To determine whether there was agreement between the short daytime ApneaGraph (dAG) and nocturnal ApneaGraph (nAG) in diagnosing sleep respiratory events initially and identifying the site of obstruction in airway.
  
  
  METHODS
  Twenty four patients diagnosed OSAHS by PSG were enrolled. The apnea-hypopnea index (AHI), apnea index (AI), obstructive apnea-hypopnea index (OAHI), central apnea hypopnea index (CAHI), mixed apnea index (MAHI), lowest oxygen saturation (LSaO2) and the proportion of upper/lower obstruction (UPPER, LOWER) of patients were measured using both dAG and nAG.
  
  
  RESULTS
  There were no significant differences between nAG and dAG for the following parameters: AHI, AI, CAHI, MAHI, OAHI, the proportion of upper/lower obstruction, or LSaO2 (P>0.05). There were significant positive correlations between nAG and dAG with regard to AHI, AI, MAHI, OAHI, the proportion of upper/lower obstruction , LSaO2 except CAHI.
  
  
  CONCLUSIONS
  The dAG has similar results with nAG in early diagnosis of sleep respiratory events and identifying the level of airway obstruction. The time-saving dAG is of considerable referential importance in diagnosis of sleep respiratory events and analysing the level of airway obstruction.
authors.affiliation: Department of Otorhinolaryngology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100730, China.
authors.forename: Rong
authors.initials: R
authors.lastname: Yu
authors.forename: Wuyi
authors.initials: W
authors.lastname: Li
authors.forename: Hong
authors.initials: H
authors.lastname: Huo
authors.forename: Ping
authors.initials: P
authors.lastname: Shen
authors.forename: Xu
authors.initials: X
authors.lastname: Tian
mesh_terms: D000328:Adult; D000402:Airway Obstruction; D005080:Exercise Test / Q000379:methods; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D017286:Polysomnography / Q000379:methods*; D012890:Sleep; D020181:Sleep Apnea, Obstructive / Q000175:diagnosis* / Q000503:physiopathology*