Pre-operative evaluations for DBS in dystonia
Stéphane Thobois1, Takaomi Taira, Cynthia Comella
1Université Lyon I, Hospices Civils de Lyon, Hôpital Neurologique Pierre Wertheimer and CNRS, UMR 5229, Lyon, France. stephane.thobois@chu-lyon.fr
Summary
Preoperative evaluation for deep brain stimulation (DBS) in dystonia uses rating scales, but validated tools for cranial or upper limb dystonia are needed. Postoperative assessment uses the same measures to evaluate DBS outcomes.
Area of Science:
- Neurology
- Neurosurgery
- Movement Disorders
Background:
- Preoperative evaluation for deep brain stimulation (DBS) in dystonia focuses on symptom severity and location.
- Patient selection for DBS is a critical first step.
Purpose of the Study:
- To review current preoperative and postoperative assessment methods for dystonia patients undergoing DBS.
- To identify gaps in validated rating scales for specific dystonia types.
Main Methods:
- Literature search conducted across PubMed, CINAHL, and Cochrane Collaborative databases.
- Analysis of commonly used clinical assessment scales for dystonia.
Main Results:
- Burke-Fahn-Marsden scale for generalized dystonia and Toronto Western Spasmodic Torticollis Scale for cervical dystonia are common.
- Quality of life and functional scales (e.g., SF-36) supplement motor assessments.
- Validated rating scales for cranial or upper limb dystonia are currently lacking.
Conclusions:
- Standard outcome measures are used in open-label fashion for clinical practice and post-DBS evaluation.
- Brain MRI is essential for diagnosis and identifying structural abnormalities.
- Functional imaging is primarily utilized for research purposes.
