IN MOVEMENT DISORDERS Preliminary data

ABSTRACT- This study describes preliminary laryngeal electromyography (LEMG) data and botulinum tox-in treatment in patients with dysphonia due to movement disorders. Twenty-five patients who had been clinically selected for botulinum toxin administration were examined, 19 with suspected laryngeal dysto-nia or spasmodic dysphonia (SD), 5 with vocal tremor, and 1 with Gilles de la Tourette syndrome (GTS). LEMG evaluations were performed before botulinum toxin administration using monopolar electrodes. Electromyography was consistent with dystonia in 14 patients and normal in 5, and differences in frequen-cy suggesting essential tremor in 3 and Parkinson tremors in 2. The different LEMG patterns and signifi-cant improvement in our patients from botulinum toxin therapy has led us to perform laryngeal electromyo-graphy as a routine in UNICAMP movement disorders ambulatory. KEY WORDS: laryngeal electromyography, movement disorders, botulinum toxin. Eletromiografia laríngea e distúrbios do movimento: dados preliminares RESUMO- Este estudo descreve dados preliminares de eletromiografia laríngea (LEMG) e tratamento com toxina botulínica em pacientes com disfonia associada a distúrbios do movimento. Foram estudados 25 pacientes, 19 com distonia laríngea ou disfonia espasmódica, 5 com tremor vocal e 1 com síndrome de Gilles de la Tourette. LEMG realizada com eletrodos monopolares, antes da administração de toxina botulínica