Journal
EUROPEAN JOURNAL OF NEUROLOGY
Volume 22, Issue 6, Pages 919-926Publisher
WILEY
DOI: 10.1111/ene.12515
Keywords
constant-current stimulation; constant-voltage stimulation; deep brain stimulation; dystonia; impedance
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Background and purposeBilateral globus pallidus deep brain stimulation (GPi-DBS) represents an effective and relatively safe therapy for different forms of refractory dystonia. The aim of this study was to assess, retrospectively, the effect of two different stimulation settings during GPi-DBS in 22 patients affected by primary generalized or multi-segmental dystonia. MethodsThirteen patients were stimulated using a voltage-controlled setting whilst in the other nine patients a current-controlled setting was used. Clinical features were evaluated for each patient at baseline, 6months and 12months after surgery by means of the Burke-Fahn-Marsden Dystonia Rating Scale. ResultsGlobus pallidus deep brain stimulation was effective in all patients. However, comparing constant-current and constant-voltage stimulation, a better outcome was found in the current-controlled group during the last 6 months of follow-up. ConclusionsCurrent-controlled stimulation is effective during GPi-DBS for primary dystonia and it could be a better choice than voltage-controlled stimulation over long-term follow-up. Click to view the accompanying paper in this issue.
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