Adduction laryngeal dystonia: proposal and evaluation of nasofibroscopy.
Dystonias are organic central motor processing disorders characterized by involuntary muscular contractions or incontrollable spasms induced by task-specific movements. Adduction laryngeal dystonias present with important speech impairments, with inappropriate spasms and abrupt voice breaks. The diagnosis is based on clinical features, evaluation by a speech therapist and transnasal fiber optic laryngoscopy.


OBJECTIVE
Our objective is to propose and evaluate a task-oriented transnasal fiber optic laryngoscopy protocol, which shows the spasms, and propose maneuvers that reduce or make them disappear, in order to facilitate the diagnosis.


METHODS
transversal study. Analysis of the transnasal fiber optic laryngoscopy records of 15 patients with adductor laryngeal dystonia using the proposed protocol.


RESULTS
most of the speech and non-vocal tasks allowed us to identify the spasms and reduce or make them disappear. We propose the exclusion of two of the maneuvers that dont bring new data to the evaluation.


CONCLUSIONS
the protocol was useful for the evaluation of the patients, showing changes in muscle behavior in the structure under investigation.
De Biase
Noemi Grigoletto
NG
Speech and Hearing School, Pontíficia Universidade Católica de São Paulo, Brazil.
Lorenzon
Paula
P
Lebl
Mariana Dantas Aumond
MD
Padovani
Marina
M
Gielow
Ingrid
I
Madazio
Glaucya
G
Moraes
Miriam
M
D002985:Clinical Protocols; D003430:Cross-Sectional Studies; D006801:Humans; D007828:Laryngoscopy / Q000379:methods*; D014743:Videotape Recording; D014832:Voice Disorders / Q000175:diagnosis* / Q000209:etiology