Impact of posture and CPAP on nasal airflow.
Respir Physiol Neurobiol
; 325: 104268, 2024 07.
Article
de En
| MEDLINE
| ID: mdl-38679307
ABSTRACT
Obstructive sleep apnea (OSA) patients who use continuous positive airway pressure (CPAP) often complain of nasal dryness and nasal obstruction as side effects of CPAP. The physiological mechanisms by which CPAP may cause nasal dryness and nasal obstruction remain poorly understood. It has been hypothesized that CPAP interferes with the nasal cycle, abolishing the resting phase of the cycle and leading to nasal dryness. We performed rhinomanometry measurements in 31 OSA patients sitting, laid supine, and supine after 10â¯min of CPAP at 10 cmH2O. A posture change from sitting to supine led to more symmetric airflow partitioning between the left and right nostrils in the supine position. CPAP did not have a significant impact on nasal resistance, unilateral airflows, or airflow partitioning. Our results suggest that airflow partitioning becomes more symmetric immediately after changing to a supine position, while CPAP had no effect on nasal airflow, thus preserving the nearly symmetric airflow partitioning achieved after the posture change.
Mots clés
Texte intégral:
1
Collection:
01-internacional
Base de données:
MEDLINE
Sujet principal:
Posture
/
Syndrome d'apnées obstructives du sommeil
/
Rhinomanométrie
/
Ventilation en pression positive continue
Limites:
Adult
/
Aged
/
Female
/
Humans
/
Male
/
Middle aged
Langue:
En
Journal:
Respir Physiol Neurobiol
/
Respir. physiol. neurobiol
/
Respiratory physiology & neurobiology
Année:
2024
Type de document:
Article
Pays de publication:
Pays-Bas