Effect of jaw forward distance on forced inspiratory airflow in patients with obstructive sleep apnea hypopnea syndrome / 中华耳鼻咽喉头颈外科杂志
Chinese Journal of Otorhinolaryngology Head and Neck Surgery
;
(12): 39-43, 2012.
Article
in Chinese
| WPRIM
| ID: wpr-313627
ABSTRACT
<p><b>OBJECTIVE</b>To study the effect of different jaw forward distance on forced inspiratory airflow(FIF) in non-apnea subjects and patients with obstructive sleep apnea hypopnea syndrome (OSAHS) and to evaluate the effective jaw forward distance for the treatment of OSAHS with the oral appliance.</p><p><b>METHODS</b>FIF was measured in 18 non-apnea subjects and 18 OSAHS patients at supine and lateral body positions with different jaw forward distances (the percentages of maximum jaw forward distance) 0%, 25%, 50% and 75%. FIF were converted to percentage values (FIF%, x(-) ± s) followed by averaged. Then the results were analyzed by one-way analysis of variance and paired t-test with α = 0.05.</p><p><b>RESULTS</b>For non-apnea subjects, there was no significant difference in the FIF values between different jaw forward distances as well as different body positions. For OSAHS patients, the mean FIF% at supine and lateral body positions were 107.1% ± 29.0% and 112.0% ± 33.1% at jaw forward 50%, and were 106.4% ± 20.7% and 116.8% ± 36.4% at jaw forward 75%, respectively, which were significantly higher than those (84.0% ± 18.3% and 98.3% ± 24.0%) at jaw forward 0% or those (92.7% ± 21.8% and 103.7% ± 22.6%) at jaw forward 25%, respectively. But there was no statistical difference in FIF between the two groups of jaw forward 50% and jaw forward 75% and no statistical difference in FIF between supine and lateral body positions in the same forward position.</p><p><b>CONCLUSION</b>Jaw forward 50% is a effective jaw forward distance by oral appliance for the treatment of OSAHS and can improve the airway ventilation in OSAHS patients.</p>
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Case-Control Studies
/
Inspiratory Capacity
/
Sleep Apnea, Obstructive
/
Jaw
Type of study:
Observational study
Limits:
Adult
/
Humans
/
Male
Language:
Chinese
Journal:
Chinese Journal of Otorhinolaryngology Head and Neck Surgery
Year:
2012
Type:
Article
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