title: [Sleep architecture changes in children with adenoidal hypertrophy].
abstract: OBJECTIVE
  Adenoidal hypertrophy in children is associated with obstructive manifestations like mouth breathing, snoring, night cough. However, the sleep architecture is poorly defined in children with AH, which is this studies for.
  
  
  METHODS
  A computer-assistant diagnostic system was used for polysomnography (PSG) recording. Sleep was scored manually according to the standard set by Rechtschaffen. 47 children with adenotonsillar hypertrophy (AH) were defined by PSG and compared with normal children PSG results.
  
  
  RESULTS
  (1) Compared with normal children, AH group had increased stage I: (15. 4 +/- 9.3)% vs (7.9 +/- 6.8)% (P < 0.01) and decreased stage II: (41.8 +/- 9.7)% vs (46.7 +/- 7.6)% (P < 0.01); increased Delta (26.2 +/- 10.6)% vs (23.3 +/- 8.7) % (P > 0.05); obviously decreased in REM: (7.7 +/- 4.9)% vs (27.3 +/- 5.6)% (P < 0.01); NREM (83.33%) was increasingly; (2) AH group had increased Arousal Index(ARI) 32.8 +/- 26.03 vs 18.3 +/- 12.2 (P < 0.05); (3) The latent period of REM was (157.1 +/- 71.4) min and about two times long as normal children.
  
  
  CONCLUSIONS
  Sleep architecture is abnormal in children with AH. Frequent electroencephalogram arousals from sleep may result in significant sleep fragmentation,but the deep sleep is sufficient. Further studies are needed to determine whether abnormalities in sleep architecture contribute to quality of life.
authors.affiliation: Department of Otolaryngology-Head and Neck Surgery, Third Affiliated Hospital, Sun Yat-sen University, Guangzhou 510360, China.
authors.forename: Xiaowen
authors.initials: X
authors.lastname: Zhang
authors.forename: Yuan
authors.initials: Y
authors.lastname: Li
authors.forename: Zhaotong
authors.initials: Z
authors.lastname: Huang
authors.forename: Gehua
authors.initials: G
authors.lastname: Zhang
authors.forename: Xian
authors.initials: X
authors.lastname: Liu
authors.forename: Jin
authors.initials: J
authors.lastname: Ye
mesh_terms: D000234:Adenoids / Q000473:pathology*; D000293:Adolescent; D016022:Case-Control Studies; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D006984:Hypertrophy; D008297:Male; D017286:Polysomnography; D012890:Sleep; D012892:Sleep Deprivation; D012894:Sleep Stages