Teflon Injection in 16 Patients with Paralytic Dysphonia Perceptual and Acoustic Evaluations Reports
Reports  |   February 01, 1984
Teflon Injection in 16 Patients with Paralytic Dysphonia
 
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Article Information
Reports   |   February 01, 1984
Teflon Injection in 16 Patients with Paralytic Dysphonia
Journal of Speech and Hearing Disorders, February 1984, Vol. 49, 72-82. doi:10.1044/jshd.4901.72
History: Received January 27, 1982 , Accepted September 29, 1983
 
Journal of Speech and Hearing Disorders, February 1984, Vol. 49, 72-82. doi:10.1044/jshd.4901.72
History: Received January 27, 1982; Accepted September 29, 1983

Sixteen patients with paralytic dysphonia were treated with Teflon injection in the paralyzed vocal fold. Trained voice pathologists rated the pre- and postinjection voices on a 5-point scale for each of 11 voice characteristics. Among these, aphonia, breathiness, and hypofunction diminished significantly after injection. The perceptual evaluation was correlated with acoustic data from long-time-average spectrum analysis, fundamental frequency distribution analysis, and waveform perturbation analysis. In this acoustic assessment, systematic changes were found in the long-time-average spectra, which agreed well with the perceptual data. In 12 of 16 patients the voice was both perceptually and acoustically improved after Teflon injection.

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