Live Recordings (Sleep Medicine Trends 2026)-15 The Impact of ENT Anatomy on Sleep

Video Transcription

Video Summary

The speaker, an otolaryngology-trained sleep medicine physician, reviews how upper airway anatomy contributes to obstructive sleep apnea (OSA) and how identifying collapse sites can guide evaluation and treatment. They describe airway “compartments” from nose to larynx: nasal cavity (septal deviation, turbinate hypertrophy), nasopharynx (adenoids, soft palate/velum), oropharynx (tonsils, lateral pharyngeal walls, tongue base/lingual tonsils), and hypopharynx/larynx (epiglottis, rarely arytenoids).<br /><br />Key points: nasal obstruction is common and treating it (medications or septoplasty/turbinate reduction) improves breathing, sleep quality, and CPAP tolerance, but usually does not reduce AHI. Velum collapse is very common and targeted by palate surgeries (e.g., UPPP) and considered in hypoglossal nerve stimulation candidacy. Tongue size and tongue fat strongly relate to OSA severity and weight loss may improve OSA partly by reducing tongue fat; novel “tongue fat” treatments are emerging. Craniofacial anatomy (retrognathia) can be treated with maxillomandibular advancement, which is effective but major surgery. Epiglottic collapse is uncommon as an isolated cause and can worsen with CPAP; oral appliances or hypoglossal stimulation may help.<br /><br />The speaker emphasizes combining anatomy with physiology using drug-induced sleep endoscopy (DICE), sometimes with CPAP titration and airflow metrics, to quantify collapsibility, set expectations, and use surgery to reduce CPAP needs even if not curative.

Keywords

obstructive sleep apnea (OSA)

upper airway anatomy

drug-induced sleep endoscopy (DICE)

nasal obstruction (septal deviation, turbinate hypertrophy)

velum/soft palate collapse (UPPP)

tongue base and tongue fat

hypoglossal nerve stimulation

maxillomandibular advancement (retrognathia)