title: Modified Friedman stage in predicting glossopharyngeal obstruction in obstructive sleep apnea.
abstract: CONCLUSIONS
  Modified Friedman stage can be used to predict glossopharyngeal obstruction better than before in patients with obstructive sleep apnea (OSA).
  
  
  OBJECTIVE
  To evaluate the diagnostic value of modified Friedman stage in predicting glossopharyngeal obstruction in patients with OSA.
  
  
  METHODS
  Eighty-five OSA patients with Friedman stage III were divided into IIIa group and IIIb group based on an imaginary line drawn in the horizontal and middle position of the soft palate. Polysomnography (PSG) was performed after nasopharyngeal tube (NPT) insertion (NPT-PSG) to diagnose glossopharyngeal obstruction. Apnea-hypopnea index (AHI) determined by NPT-PSG (NPT-AHI) and glossopharyngeal obstruction result determined by NPT-PSG (NPT-PSG result) were compared between the two groups.
  
  
  RESULTS
  There were significant differences in NPT-AHI (p < 0.01) and NPT-PSG result (p < 0.01) between the two groups.
authors.affiliation: a Department of Otolaryngology, Head and Neck Surgery , PLA General Hospital , Beijing , PR China.|b Department of Otolaryngology , General Hospital of Shenyang Military Area Command , Shenyang , PR China.
authors.forename: Dahai
authors.initials: D
authors.lastname: Wu
authors.affiliation: b Department of Otolaryngology , General Hospital of Shenyang Military Area Command , Shenyang , PR China.
authors.forename: Jie
authors.initials: J
authors.lastname: Qin
authors.affiliation: b Department of Otolaryngology , General Hospital of Shenyang Military Area Command , Shenyang , PR China.
authors.forename: Xiaohong
authors.initials: X
authors.lastname: Guo
authors.affiliation: a Department of Otolaryngology, Head and Neck Surgery , PLA General Hospital , Beijing , PR China.
authors.forename: Pu
authors.initials: P
authors.lastname: Dai
authors.affiliation: b Department of Otolaryngology , General Hospital of Shenyang Military Area Command , Shenyang , PR China.
authors.forename: Shuhua
authors.initials: S
authors.lastname: Li
authors.affiliation: a Department of Otolaryngology, Head and Neck Surgery , PLA General Hospital , Beijing , PR China.
authors.forename: Dongyi
authors.initials: D
authors.lastname: Han
mesh_terms: D000328:Adult; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010160:Palate, Soft / Q000033:anatomy & histology*; D020181:Sleep Apnea, Obstructive / Q000209:etiology*; D014059:Tongue / Q000033:anatomy & histology*; D055815:Young Adult
keywords: Friedman stage; Obstructive sleep apnea; glossopharyngeum; obstruction; prediction