title: Laryngeal electromyography in movement disorders: preliminary data.
abstract: This study describes preliminary laryngeal electromyography (LEMG) data and botulinum toxin 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 dystonia 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 frequency suggesting essential tremor in 3 and Parkinson tremors in 2. The different LEMG patterns and significant improvement in our patients from botulinum toxin therapy has led us to perform laryngeal electromyography as a routine in UNICAMP movement disorders ambulatory.
authors.affiliation: Servicio de Neurologia, Faculdade de Ciências Medicas, Universidade de Estadual de Campinas (UNICAMP), Campinas, SP, Brazil.
authors.forename: Paulo A T
authors.initials: PA
authors.lastname: Kimaid
authors.forename: Elizabeth M A B
authors.initials: EM
authors.lastname: Quagliato
authors.forename: Agrício N
authors.initials: AN
authors.lastname: Crespo
authors.forename: Aline
authors.initials: A
authors.lastname: Wolf
authors.forename: Maura A
authors.initials: MA
authors.lastname: Viana
authors.forename: Luiz A L
authors.initials: LA
authors.lastname: Resende
mesh_terms: D000328:Adult; D017677:Age Distribution; D000368:Aged; D018726:Anti-Dyskinesia Agents / Q000627:therapeutic use*; D001905:Botulinum Toxins / Q000627:therapeutic use*; D004552:Elder Abuse; D004576:Electromyography; D005260:Female; D006801:Humans; D007821:Laryngeal Muscles / Q000187:drug effects; D007830:Larynx; D008297:Male; D008875:Middle Aged; D009069:Movement Disorders / Q000150:complications / Q000188:drug therapy / Q000503:physiopathology*; D017678:Sex Distribution; D014832:Voice Disorders / Q000150:complications / Q000188:drug therapy* / Q000503:physiopathology
chemical_list: D018726:Anti-Dyskinesia Agents; D001905:Botulinum Toxins