Introdução : Electromyography (EMG) is a technique developed and used in neurology for diagnosis and prognostic definition of neuromuscular diseases. Study design: Clinical prospective. Material and method: Thirty (30) patients with vocal fold immobility have been grouped according to the diagnostic hypothesis clinically established. Results: EMGL diagnosed peripherical neuropathic injury, central neuropathic injury or fixation of the cricoarterytenoideous in all patients who presented vocal fold immobility with no defined cause. In those patients carrying vocal fold immobility on account of mechanical traumatic cause, clinically so defined, EMGL confirmed peripheral neuropathic injury in 70% of the cases and for the remaining 30% of the cases, it determined other causes such as peripheral neuropathic of compression, myopia and fixation of the cricoarterytenoideous. Conclusion: EMGL confirmed a chronic neuropathic injury in those patients carrying vocal fold immobility by virtue of compression caused by a possible clinically defined tumor.
Eletromiography; larynx; paralysis
