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One-pass Deep Brain Stimulation of Dentato-rubro-thalamic Tract and Subthalamic Nucleus for Tremor-dominant or Equivalent Type Parkinson's Disease

Overview
Specialty Neurosurgery
Date 2016 Feb 16
PMID 26876564
Citations 18
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Abstract

Background: Refractory tremor in tremor-dominant (TD) or equivalent-type (EQT) idiopathic Parkinson's syndrome (IPS) poses the challenge of choosing the best target region to for deep brain stimulation (DBS). While the subthalamic nucleus is typically chosen in younger patients as the target for dopamine-responsive motor symptoms, it is more complicated if tremor does not (fully) respond under trial conditions. In this report, we present the first results from simultaneous bilateral DBS of the DRT (dentato-rubro-thalamic tract) and the subthalamic nucleus (STN) in two elderly patients with EQT and TD IPS and dopamine-refractory tremor.

Methods: Two patients received bilateral octopolar DBS electrodes in the STN additionally traversing the DRT region. Achieved electrode positions were determined with helical CT, overlaid onto DTI tractography data, and compared with clinical data of stimulation response.

Results: Both patients showed immediate and sustained improvement of their tremor, bilaterally.

Conclusions: The proposed approach appears to be safe and feasible and a combined stimulation of the two target regions was performed tailored to the patients' symptoms. Clinically, no neuropsychiatric effects were seen. Our pilot data suggest a viable therapeutic option to treat the subgroup of TD and EQT IPS and with tremor as the predominant symptom. A clinical study to further investigate this approach (

Opinion: www.clinicaltrials.gov ; NCT02288468) is the focus of our ongoing research.

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Middlebrooks E, Okromelidze L, Carter R, Jain A, Lin C, Westerhold E Neuroradiol J. 2021; 35(2):203-212.

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