title: [Effects of sleep architecture in different age children with obstructive sleep apnea syndrome].
abstract: OBJECTIVE
  To explore how obstructive sleep apnea syndrome(OSAHS) affects different age children's sleep architecture.
  
  
  METHODS
  One hundred and thirty three OSAHS children which divided into preschool age group and school age group, were monitored with polysomnography for 7 hours at night, sleep efficiency, stage I %, stage II %, SWS%, REM%, apnea/hypopnea index, arousal index and nadir O2 desaturation were recorded and analyzed.
  
  
  RESULTS
  Between preschool age group and school age group, sleep efficiency (88.0% +/- 4.0%) versus 94.1% +/- 1.30%), stage I% (14.2 +/- 2.5 versus 10.6 +/- 1.9), stage II% (40.15 +/- 4.6 versus 46.5 +/- 2.4), SWS% (27.4 +/- 6.4 versus 18.5 +/- 1.7), REM% (17.7 +/- 3.0 versus 22.3 +/- 2.0), apnea/hypopnea index (5.9 +/- 1.3 versus 7.7 +/- 2.6), arousal index (18.3 +/- 3.5 versus 22.4 +/- 2.7), nadir O2 desaturation (87.2 +/- 2.1 versus 90.1 +/- 0.8), the difference between preschool age group and school age group did not reach statistical significance.
  
  
  CONCLUSIONS
  Under the state of obstructive sleep apnea syndrome (OSAHS) preschool age group and school age group have similar sleep architecture, and preschool age group have more "REM deprivation" than school age group.
authors.affiliation: Department of Otorhinolaryngology, Guangzhou Children's Hospital, Guangzhou, 510120, China.
authors.forename: Lifeng
authors.initials: L
authors.lastname: Zhou
authors.forename: Dabo
authors.initials: D
authors.lastname: Liu
authors.forename: Jianwen
authors.initials: J
authors.lastname: Zhong
authors.forename: Zhenyun
authors.initials: Z
authors.lastname: Huang
authors.forename: Qian
authors.initials: Q
authors.lastname: Chen
authors.forename: Zongyu
authors.initials: Z
authors.lastname: Tan
mesh_terms: D000367:Age Factors; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D008297:Male; D017286:Polysomnography; D020181:Sleep Apnea, Obstructive / Q000453:epidemiology / Q000503:physiopathology*