Comparison between multiview videofluoroscopy and nasendoscopy of velopharyngeal movements.

The videofluoroscopic and nasopharyngoscopic observations of velopharyngeal movements during speech were compared in 80 subjects with hypernasal speech. An endviewing flexible fiberoptic endoscope was used for nasopharyngoscopic examination. This failed to demonstrate movements of the lateral pharyngeal walls that were videofluoroscopically documented in one third of the patients. In the cases of disagreement, the angle of view was impaired because of the presence of adenoid tissue. The misinterpretation at nasopharyngoscopy was explained by an unfavorable observation position of the flexible scope and failure to pass it further into the pharynx. Conclusions are satisfactory that videofluoroscopy is an indispensable procedure for assessing velopharyngeal function.