Strelow, Joshua ORCID: 0000-0002-2194-5930 (2023). Using Electrophysiological and Tractographic Correlates to Improve Deep Brain Stimulation Therapy in Parkinson’s Disease. PhD thesis, Universität zu Köln.
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Abstract
Deep brain stimulation of the subthalamic nucleus is a highly effective treatment for medication refractory Parkinson’s disease. However, its therapeutic benefit differs across patients. This inter-individual variability can be partly explained by the accuracy of electrode implantation during surgery, however, one of the most decisive factors for therapeutic success is the postoperative programming of stimulation parameters. Up to date, the optimization of stimulation parameters for deep brain stimulation relies on the careful neurological examination of the patient under different stimulation settings. While this approach is widely accepted as the first programming step after surgery, it is considered time- and resource-consuming, as well as burdensome for both, patients and clinical staff. Imaging-guided and electrophysiological methods can be used to examine the effect of deep brain stimulation on the brain tissue, however, it is still unknown, how these insights can be used to optimize deep brain stimulation therapy in clinical practice. While previous studies have already shown that both approaches might improve time-spent on programming, with non-inferior results to clinical programming, there is still a lack of real-life data and more patient-specific approaches that account for parkinsonian subtypes and the symptomatic burden of individual patients. Therefore, the overall aim of this thesis was to tackle this issue by providing real-life evidence of imaging- and electrophysiology-guided deep brain stimulation from a large, multi-center retrospective cohort of Parkinson’s disease patients with a particular gait disorder and a prospective cohort of patients with a novel device enabling chronic recording of local brain activity to guide the initial programming of deep brain stimulation. Our findings demonstrate the significant potential of both imaging-guided and electrophysiological approaches as objective and time-saving tools for individualized deep brain stimulation. While prior studies have investigated the use of anatomically guided contact selection for overall parkinsonian symptoms, we here demonstrate how freezing of gait, as one of the most burdensome parkinsonian symptoms in late stages of the disease, might benefit from targeting specific basal-ganglia pathways. Moreover, we have shown that parameter setting can be further enhanced by incorporating resting-state brain activity measurements and investigating the acute effect of stimulation on the activity of the nucleus subthalamicus. To conclude, the results of this thesis hold relevant implications for clinical application and are consistent with previous findings in subthalamic deep brain stimulation for Parkinson’s disease.
Item Type: | Thesis (PhD thesis) | ||||||||||
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Corporate Creators: | Department of Neurology, Faculty of Medicine and University Hospital Cologne, University of Cologne, 50937 Cologne, Germany | ||||||||||
URN: | urn:nbn:de:hbz:38-715695 | ||||||||||
Date: | 10 November 2023 | ||||||||||
Language: | English | ||||||||||
Faculty: | Faculty of Medicine | ||||||||||
Divisions: | Faculty of Medicine > Neurologie > Klinik und Poliklinik für Neurologie | ||||||||||
Subjects: | Medical sciences Medicine | ||||||||||
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Date of oral exam: | 31 October 2023 | ||||||||||
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Refereed: | Yes | ||||||||||
URI: | http://kups.ub.uni-koeln.de/id/eprint/71569 |
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