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Long term follow-up of deep brain stimulation of the caudal zona incerta for essential tremor
Karolinska University Hospital.
Umeå University.
Linköping University, Department of Biomedical Engineering, Biomedical Instrumentation. Linköping University, The Institute of Technology.
Umeå University.
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2012 (English)In: Journal of Neurology, Neurosurgery and Psychiatry, ISSN 0022-3050, E-ISSN 1468-330X, Vol. 83, no 3, 258-262 p.Article in journal (Refereed) Published
Abstract [en]

Purpose The ventral intermediate nucleus of thalamus is the standard target for deep brain stimulation (DBS) in essential tremor (ET). However, favourable data have recently highlighted the caudal zona incerta (cZi) as an alternative target. Reports concerning the long-term results are however lacking, and we have therefore evaluated the long-term effects in our patients with ET and cZi DBS. less thanbrgreater than less thanbrgreater thanMethods 18 patients were evaluated using the Essential Tremor Rating Scale (ETRS) before and on-/off-stimulation at 1 and 3-5 years after surgery (mean 48.5+/-10.6 months). Two patients were operated on bilaterally but all electrodes were evaluated separately. The stimulation parameters were recorded and the stimulation strength calculated. less thanbrgreater than less thanbrgreater thanResults A baseline total ETRS mean score of 46.0 decreased to 21.9 (52.4%) at the final evaluation. On the treated side, tremor of the upper extremity (item 5 or 6) improved from 6.1 to 0.5 (91.8%) and hand function (items 11-14) improved from 9.3 to 2.0 (78.0%). Activities of daily living improved by 65.8%. There was no increase in stimulation strength over time. less thanbrgreater than less thanbrgreater thanConclusion cZi DBS is a safe and effective treatment for the long term suppression of ET.

Place, publisher, year, edition, pages
BMJ Publishing Group , 2012. Vol. 83, no 3, 258-262 p.
National Category
Engineering and Technology
URN: urn:nbn:se:liu:diva-76017DOI: 10.1136/jnnp-2011-300765ISI: 000300612200229OAI: diva2:512840
Funding Agencies|Umea University||Foundation for Clinical Neuroscience at the University Hospital of Umea||Available from: 2012-03-29 Created: 2012-03-23 Last updated: 2012-03-29

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