title: [Peri-uvulopalatopharyngoplasty electroencephalogram spectral power analysis in patients with obstructive sleep apnea-hypopnea syndrome].
abstract: OBJECTIVE
  To study the peri-uvulopalatopharyngoplasty (UPPP) effects on EEG spectral power changes in patients with obstructive sleep apnea-hypopnea syndrome (OSAHS).
  
  
  METHODS
  Fifty-four cases were included. The diagnosis was made by polysomnography (PSG). C3/A2 was analyzed by using fast Fourier transform (FFT). Spectral edge frequency (SEF), median power frequency (MPF). a-index, beta-index, delta-index and theta-index were compared with those peri-UPPP treatment.
  
  
  RESULTS
  Sleep architecture was improved after UPPP. The ratio of slow wave sleep increased. A decrease of mean SEF in total sleep period. The mean MPF was decreased during stage IV. a-index and beta-index were decreased, delta-index and theta-index were increased after the therapy.
  
  
  CONCLUSIONS
  The UPPP therapy has an acute effect in improving the sleep architecture and EEG power spectrum. These changes may be related to the recovery of cerebral function in patients with OSAHS.
authors.affiliation: Department of Otolaryngology, Wuhan General Hospital of PLA, Wuhan, 430070, China. yaohq64@sina.com
authors.forename: Xingqi
authors.initials: X
authors.lastname: Yao
authors.forename: Wen
authors.initials: W
authors.lastname: Jiang
authors.forename: Guifeng
authors.initials: G
authors.lastname: Zhang
authors.forename: Yong
authors.initials: Y
authors.lastname: Chu
authors.forename: Yi
authors.initials: Y
authors.lastname: Sun
authors.forename: Wuyan
authors.initials: W
authors.lastname: Li
mesh_terms: D000328:Adult; D004569:Electroencephalography; D005260:Female; D006801:Humans; D007432:Intraoperative Period; D008297:Male; D008875:Middle Aged; D010159:Palate / Q000601:surgery; D010614:Pharynx / Q000601:surgery; D020181:Sleep Apnea, Obstructive / Q000503:physiopathology* / Q000601:surgery; D014609:Uvula / Q000601:surgery