title: [Correlation study between PSG parameters and CT measurements in upper airway of OSAHS patients before and after UPPP].
abstract: OBJECTIVE
  To investigate the correlation of polysomnography parameters and CT measurements in upper airway of mild and severe obstructive sleep apnea hypopnea syndrome (OSAHS) patients before and after uvulopalatopharyngoplasty (UPPP).
  
  
  METHODS
  Having PSG detection and spiral computed tomograph scan for 30 mild and severe OSAHS patients both before and after UPPP operation, compare the morphology change of upper airway on CT measurements, use pearson correlation analysis to analysis the correlation between the minimum cross-sectional area, left and right diameter, anteroposterior diameter in upper airway and apnea hypopnea index (AHI).
  
  
  RESULTS
  The difference of the minimum cross-sectional area, left and right diameter, anteroposterior diameter in upper airway before and after UPPP operation was significant. The minimum cross-sectional area, left and right diameter was negatively correlated with AHI; Left and right diameter was not correlated with AHI.
  
  
  CONCLUSIONS
  The minimum cross-sectional area, left and right diameter, anteroposterior diameter after operation is bigger than before operation. The minimum cross-sectional area, left and right diameter is negatively correlated with AHI.
authors.affiliation: Department of Otolaryngology, Shanghai Seventh People's Hospital, Shanghai, 200137, China. xzhuangwei@163.com
authors.forename: Wei
authors.initials: W
authors.lastname: Huang
authors.affiliation: Department of Radiology, Shanghai Seventh People's Hospital, Shanghai, 200137, China.
authors.forename: Litao
authors.initials: L
authors.lastname: Song
authors.affiliation: Department of Otolaryngology, Shanghai Seventh People's Hospital, Shanghai, 200137, China.
authors.forename: Qing
authors.initials: Q
authors.lastname: Ye
authors.affiliation: Department of Otolaryngology, Shanghai Seventh People's Hospital, Shanghai, 200137, China.
authors.forename: Heying
authors.initials: H
authors.lastname: Yue
authors.affiliation: Department of Otolaryngology, Shanghai Seventh People's Hospital, Shanghai, 200137, China.
authors.forename: Hua
authors.initials: H
authors.lastname: Hu
authors.affiliation: Department of Otolaryngology, Shanghai Seventh People's Hospital, Shanghai, 200137, China.
authors.forename: Yuejin
authors.initials: Y
authors.lastname: Yu
authors.affiliation: Department of Otolaryngology, Shanghai Seventh People's Hospital, Shanghai, 200137, China.
authors.forename: Yanan
authors.initials: Y
authors.lastname: Hao
authors.affiliation: Department of Otolaryngology, Shanghai Seventh People's Hospital, Shanghai, 200137, China.
authors.forename: Jun
authors.initials: J
authors.lastname: Tan
authors.affiliation: Department of Otolaryngology, Shanghai Seventh People's Hospital, Shanghai, 200137, China.
authors.forename: Yongjiang
authors.initials: Y
authors.lastname: Fan
mesh_terms: D000328:Adult; D005260:Female; D006801:Humans; D007432:Intraoperative Period; D008297:Male; D008875:Middle Aged; D010159:Palate / Q000601:surgery; D010614:Pharynx / Q000601:surgery; D017286:Polysomnography; D020181:Sleep Apnea, Obstructive / Q000000981:diagnostic imaging* / Q000601:surgery; D014057:Tomography, X-Ray Computed; D014609:Uvula / Q000601:surgery