title: [Research about sleep structure of OSAHS].
abstract: OBJECTIVE
  Research the sleep structure of the OSAHS and snores, explore the reason that patients feel drowsy in daytime.
  
  
  METHODS
  Monitor the sleep of 46 OSAHS, 16 snores and 20 normal control, calculate the percent of stages of NREM and REM, count the RDI, AI, HI, total MI, MI associated with leg movement, MI associated with RDI, MI associated with snore, spontaneous MI.
  
  
  RESULTS
  OSAHS has sleep structure disturbance obviously. The light sleep (stage I) increase obviously, but deep one decrease (stage II + V) obviously. The sleep structure is insufficient. The patients are deprived of a number of the REM sleep. The waking time is longer than normal control group. During the light sleep, the microarousal that is associated with both apnea and leg movement increase obviously.
  
  
  CONCLUSIONS
  During the sleep, OSAHS has obvious sleep deprivation, frequent arousal, disturbance sleep structure and blood desaturation, etc. These resulted in disturbances of brain metabolize. This is the reason that patients feel drowsy, feeble decline, etc.
authors: Department of Otolaryngology, General Hospital of Air Force, Beijing, 100036, China. zhang.bao.lin@sohu.com
authors: Baolin
authors: B
authors: Zhang
authors: Xiuqin
authors: X
authors: Li
authors: Tingchu
authors: T
authors: Wang
mesh_terms: D000328:Adult; D000368:Aged; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D017286:Polysomnography; D012890:Sleep / Q000502:physiology*; D020181:Sleep Apnea, Obstructive / Q000503:physiopathology*; D012913:Snoring / Q000503:physiopathology