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Globus pallidus deep brain stimulation in dystonia
Alan Diamond1, Joohi Shahed, Shaheda Azher
1Department of Neurology, Baylor College of Medicine, Houston, Texas 77030, USA.
Movement Disorders : Official Journal of the Movement Disorder Society
|December 13, 2005
Summary
Globus pallidus deep brain stimulation (GPi-DBS) offers a safe and effective treatment for generalized dystonia. This therapy significantly improved motor function scores in patients with generalized dystonia.
Area of Science:
- Neurology
- Neurosurgery
Background:
- Dystonia is a movement disorder characterized by involuntary muscle contractions.
- Globus pallidus deep brain stimulation (GPi-DBS) is an emerging therapeutic option for refractory dystonia.
- Patient selection is crucial for successful GPi-DBS outcomes.
Purpose of the Study:
- To evaluate the efficacy and safety of GPi-DBS in patients with generalized dystonia.
- To assess the impact of GPi-DBS on motor function using the Unified Dystonia Rating Scale (UDRS).
Main Methods:
- Prospective evaluation of eleven patients with generalized dystonia undergoing GPi-DBS.
- Standardized assessments using the Unified Dystonia Rating Scale (UDRS) pre- and post-intervention.
- Blinded videotape assessments to objectively measure treatment response.
Main Results:
- Significant improvements observed in mean total UDRS scores (15.3%) post-GPi-DBS.
- Marked improvements noted in neck (18.18%), trunk (32.9%), arm (17.9%), and leg (19.9%) subscores.
- One patient experienced a skin infection requiring surgical intervention, indicating a manageable complication rate.
Conclusions:
- GPi-DBS is a safe and effective treatment for generalized dystonia in patients with persistent symptoms despite optimal medical management.
- GPi-DBS demonstrates significant functional improvements across various body regions affected by dystonia.
- This therapeutic approach offers a valuable alternative for individuals with severe, medically refractory dystonia.