title: [Influence of nasal obstruction on obstructive sleep apnea syndrome].
abstract: OBJECTIVE
  To explore the influence of nasal obstruction on obstructive sleep apnea syndrome (OSAS).
  
  
  METHODS
  18 patients with OSAS concomitant with nasal obstruction and palatopharyngeal obstruction were only operated on nasal cavity to improve ventilation, followed-up six months.
  
  
  RESULTS
  12 cases were reported remission, 4 cases efficient, and 6 cases unchanged, apnea and hypopnea index (AHI) decreased from 29.9 +/- 2.1 to 22.8 +/- 2.7, and lowest SaO2 (LoSaO2) increased from (75 +/- 2.9)% to (83.4 +/- 2.3)%. There was no significant difference for body mass index (BMI), but there was significant difference for preoperative AHI between non-effective groups and effective groups.
  
  
  CONCLUSIONS
  Nasal obstruction is an important pathogenic factor. It is a necessary method to prevent OSAS by relieving nasal obstruction earlier and operation on nasal cavity is an effective method for the management of OSAS concomitant with nasal obstruction.
authors.affiliation: Departrunt of Otorhinolary-ngology, Dalian Municipal Central Hospital, Dalian 116033.
authors.forename: Qinglong
authors.initials: Q
authors.lastname: Gu
authors.forename: Qingfeng
authors.initials: Q
authors.lastname: Zhang
mesh_terms: D000328:Adult; D000368:Aged; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008875:Middle Aged; D015508:Nasal Obstruction / Q000150:complications / Q000601:surgery*; D020181:Sleep Apnea, Obstructive / Q000209:etiology / Q000517:prevention & control* / Q000601:surgery