[Effect of mouth breathing on upper airway structure in patients with obstructive sleep apnea].
Lin Chuang Er Bi Yan Hou Tou Jing Wai Ke Za Zhi
; 37(7): 529-534, 2023 Jul.
Article
em Zh
| MEDLINE
| ID: mdl-37549944
ABSTRACT
Objective:
To compare the changes of morphology of pharynx in patients with obstructive sleep apnea hypopnea syndrome ï¼OSAHSï¼ and healthy individuals during oral or nasal breathing, and explore the relevant influencing factors.Methods:
Twenty-nine adult patients with OSAHS and 20 non-snoring controls underwent MRI to obtain upper airway structural measurements while the subjects were awake and during mouth breathing with a nasal clip.The following were analyzed. â The changes of upper airway structure of oral and nasal respiration in non-snoring control/OSAHS patients were observed; â¡The differences and influencing factors of upper airway structure changes between OSAHS patients and controls were compared during breathing.Results:
The control group consisted of 15 males and 5 females, with an apnea-hypopnea index ï¼AHIï¼<5 events/h, while the OSAHS group comprised 26 males and 3 females with an AHI of 40.4±23.1 events/h and the mean lowest arterial oxygen saturation ï¼LSaOî2ï¼ was 79.5% ±10.0%. In the both groups, the vertical distance between the mandible and the posterior pharyngeal wall decreased ï¼P<0.05ï¼; The long axis of tongue body decreased ï¼P<0.05ï¼, and the contact area between tongue and palate decreased. There was no significant change in the total volume of the retropalatineï¼RPï¼ and retroglossalï¼RGï¼ airway in the control group ï¼P>0.05ï¼. However, the minimum cross-sectional area and volume of the RP airway in OSAHS decreased ï¼P<0.001ï¼. The lateral diameters of uvula plane in OSAHS decreased during mouth breathing, which was contrary to the trend in the control group ï¼P=0.017ï¼. The AHI of patients was positively correlated with the reduction of the volume of the RP airway during oral breathing ï¼P=0.001ï¼; The reduction of the distance between the mandible and the posterior pharyngeal wall was positively correlated with the length of the airway ï¼P<0.001ï¼.Conclusion:
Mouth breathing leads to the shortening of the long axis of the tongue, the reduction of the contact area between the soft palate and the tongue, vertical distance between the mandible and the posterior pharyngeal wall, and the cross-sectional area of the epiglottis plane. These changes vary between OSAHS patients and controls. During mouth breathing, the diameters, areas and volumes of the RP area decreased, and were more significant in severe cases.Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Apneia Obstrutiva do Sono
/
Respiração Bucal
Limite:
Adult
/
Female
/
Humans
/
Male
Idioma:
Zh
Revista:
Lin Chuang Er Bi Yan Hou Tou Jing Wai Ke Za Zhi
Ano de publicação:
2023
Tipo de documento:
Article