title: [Study of acoustic rhinometry and rhinomanometry for severe obstructive sleep apnea-hypopnea syndrome].
abstract: OBJECTIVE
  To study the relationship between nasal airway function and severe obstructive sleep apnea-hypopnea syndrome (sOSAHS).
  
  
  METHODS
  One hundred and four cases were divided into 3 groups: group A was 39 normal adult men, group B was 25 nonobese patients with sOSAHS (BMI<28), groups C was 40 obese patients with sOSAHS (BMI > or = 28). Acoustic rhinometry and rhinomanometer was used to acquire unilateral area of first constriction, unilateral area of second of constriction, unilateral minimum cross-sectional area,unilateral nasal volume 0-5 cm, 2-5 cm, the effective unilateral and total nasal resistances in inspiration, expiration at 150 Pa (URins, URexp, TRins, TRexp).
  
  
  RESULTS
  Nasal resistance were significantly higher in the group B compared to the group A and group C (P<0.05). Among the group B, but not the group A and group B, we found significant correlations between TRins,TRexp and apnea hypopnea index (r=0.402, 0.401, P<0.05).
  
  
  CONCLUSIONS
  Nasal resistance is an important factor for nonobese patients with sOSAHS.
authors: Department of Otolaryngology-Head and Neck Surgery, Navy General Hospital, Beijing, 100048, China.
authors: Xi
authors: X
authors: Chen
authors: Jiantao
authors: J
authors: Song
authors: Donglan
authors: D
authors: Chen
authors: Jianjun
authors: J
authors: Sun
mesh_terms: D000293:Adolescent; D000328:Adult; D000403:Airway Resistance; D016022:Case-Control Studies; D045853:Exhalation; D006801:Humans; D008297:Male; D008875:Middle Aged; D023842:Rhinometry, Acoustic; D020181:Sleep Apnea, Obstructive / Q000503:physiopathology*; D055815:Young Adult