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Bilateral pallidal stimulation for "sticking-out tongue" feature in patients with primary focal tongue protrusion dystonia.

Authors
 Jong Chul Chung  ;  Joo Pyung Kim  ;  Won Seok Chang  ;  Hae Yu Kim  ;  Jin Woo Chang 
Citation
 NEUROMODULATION, Vol.17(2) : 133-137, 2014 
Journal Title
 NEUROMODULATION 
ISSN
 1094-7159 
Issue Date
2014
MeSH
Deep Brain Stimulation/methods* ; Dystonia/diagnosis* ; Dystonia/physiopathology ; Dystonia/therapy* ; Electromyography/methods ; Female ; Globus Pallidus/physiology* ; Humans ; Middle Aged ; Tongue/pathology* ; Treatment Outcome
Keywords
Deep brain stimulation ; dyskinesia ; dystonia ; globus pallidus internus ; pallidal stimulation
Abstract
INTRODUCTION: Tongue protrusion dystonia can cause difficulty with speech, mastication, breathing, and swallowing. Deep brain stimulation (DBS) of the globus pallidus internus (GPi) is a widespread therapeutic alternative for treating medically refractory dystonia. To our knowledge, detailed reports regarding DBS for tongue protrusion dystonia are rare. In this report, we describe two patients with "sticking out" tongue protrusion who had undergone bilateral GPi DBS. METHODS: Operations were performed with surface electromyographic (EMG) monitoring, microelectrode recording, and macrostimulation to identify the point at which tongue kinetic cells respond most effectively. The most effective location for active contacts was identified according to burst EMG response in the posteroventral GPi. RESULTS: Two years after DBS, total Burke, Fahn, and Marsden Dystonia Rating Scale scores of two patients were improved from 12.5 to 1 (92.0%) and from 13 to 1 (92.3%), respectively. One 58-year-old woman who lost 7 kg weight from not eating well improved enough to eat solid food and became free from choking. Another 54-year-old woman who had dysarthria and mumbled could speak more fluently and would not have complained difficulty in reading any more. CONCLUSION: Stimulation on posteroventral GPi for patients with idiopathic "sticking-out" tongue movement changes EMG pattern in orofacial muscles. This fact supports a reason for modulation of unknown circuit connecting tongue-specific area in motor cortex, and basal ganglia.
Full Text
http://onlinelibrary.wiley.com/doi/10.1111/ner.12077/abstract
DOI
10.1111/ner.12077
Appears in Collections:
1. College of Medicine (의과대학) > Dept. of Neurosurgery (신경외과학교실) > 1. Journal Papers
Yonsei Authors
Chang, Won Seok(장원석) ORCID logo https://orcid.org/0000-0003-3145-4016
Chang, Jin Woo(장진우) ORCID logo https://orcid.org/0000-0002-2717-0101
Chung, Jong Chul(정종철)
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/138383
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