Ultrasound assessment of vocal fold paresis: a correlation case series with flexible fiberoptic laryngoscopy and adding the third dimension (3-D) to vocal fold mobility assessment.

BACKGROUND Perioperative examination ofthe vocal folds with flexible fiberoptic laryngoscopy is not always feasible. Prior studies suggest vocal fold ultrasound may provide a useful screening tool, however, correlation to laryngoscopic findings is necessary. The purpose of the case series was to validate vocal fold ultrasound in the adult population and to correlate the ultrasound findings to the assessment provided by flexible fiberoptic laryngoscopy. MATERIALS AND METHODS This IRB approved study accrued sixteen patients. Vocal fold ultrasound performed by the anesthesiologist was correlated with the laryngoscopy performed by the otolaryngologist. RESULTS Assessment of vocal fold motion was congruent in thirteen patients with normal vocal fold mobility; however, there was discordance between the findings in three patients. CONCLUSION Vocal fold ultrasound may be useful to screen for vocal fold motion abnormalities in the adult population. Abnormal findings on vocal fold ultrasound should be confirmed with subsequent laryngoscopy.