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Updated: May 27, 2026

Drug-Induced Sleep Endoscopy (DISE) with Target Controlled Infusion (TCI) and Bispectral Analysis in Obstructive Sleep Apnea
Published on: December 6, 2016
[Study of acoustic rhinometry and rhinomanometry for severe obstructive sleep apnea-hypopnea syndrome]
Xi Chen1, Jiantao Song, Donglan Chen
1Department of Otolaryngology-Head and Neck Surgery, Navy General Hospital, Beijing, 100048, China.
Objective:
To study the relationship between nasal airway function and severe obstructive sleep apnea-hypopnea syndrome (sOSAHS).
Method:
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).
Result:
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).
Conclusion:
Nasal resistance is an important factor for nonobese patients with sOSAHS.
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