Abstract
To evaluate the relationships between laryngeal inflammation assessed using the Reflux Finding Score (RFS), laryngeal sensory function, and apnea severity in patients with obstructive sleep apnea (OSA). Endoscopic sensory testing (EST) was performed with subsequent blinded scoring from video of RFS. An RFS>7 was indicative of increased inflammatory change. Of 34 patients evaluated, 29 had OSA (apnea-hypopnea index [AHI]>or=15 events/h) at polysomnography. Increased inflammation was present in 26/29 (90%), with changes suggestive of laryngopharyngeal reflux. There were significant correlations between: inflammation and OSA severity (eg, RFS vs AHI, r=0.57, P<0.001); inflammation and laryngeal sensory impairment (EST detection threshold and pressure required to elicit the laryngeal adductor reflex, LAR); and the degree of sensory impairment and OSA severity. Laryngeal inflammation is prevalent among OSA patients and correlates with laryngeal sensory dysfunction, attenuation of the LAR, and apnea severity. C-4.
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