Nasal congestion from allergies or a deviated septum can worsen sleep apnea by increasing airway resistance; treating

https://www.scribd.com/document/997941580/How-a-Sleep-Apnea-Oral-Appliance-Is-Fitted-Step-by-Step-Overview-207415

Nasal congestion from allergies or a deviated septum can worsen sleep apnea by increasing airway resistance; treating nasal issues can aid CPAP comfort and airflow.