Introduction
OSA, epiglottis
OBSTRUCTIVE SLEEP APNEA, COLLAPSE
Continuous positive airway pressure (CPAP) therapy counteracts upper airway collapse by acting as a pneumatic splint and is regarded as the mainstay of treatment for adults with moderate to severe obstructive sleep apnea (OSA) [This study sought to determine the effect of incremental CPAP levels on upper airway structures, particularly the epiglottis, during drug-induced sleep endoscopy (DISE). In addition, we evaluated whether CPAP-resistant collapse impacts ventilatory flow.