• World Neurosurg · Feb 2023

    Review

    Directional DBS - A step in the right direction? A systematic review of the clinical and therapeutic efficacy of Directional DBS in Parkinson's Disease.

    • Purushotham V Ramanathan, Sebastian Salas-Vega, and Mahesh B Shenai.
    • School of Medicine, University of Virginia, Charlottesville, Virginia, USA.
    • World Neurosurg. 2023 Feb 1; 170: 5463.e154-63.e1.

    BackgroundThe use of directional deep brain stimulation (dDBS) electrodes for the treatment of movement disorders such as Parkinson disease (PD) has become relatively widespread. However, the efficacy of dDBS relative to its omnidirectional deep brain stimulation (oDBS) counterpart is not well characterized. This systematic review aims to synthesize the literature comparing clinical and therapeutic outcomes of dDBS relative to oDBS in patients with PD.MethodsA systematic literature search for studies with comparative clinical outcome data between dDBS and oDBS was performed across the PubMed, Ovid MEDLINE, and Web of Science databases. Data including therapeutic window (TW) and surrogate measures and the Unified Parkinson's Disease Rating Scale score were collected and summarized across multiple time periods.ResultsTen studies met the eligibility criteria. Three of these studies evaluated motor performance in the form of Unified Parkinson's Disease Rating Scale III, with none finding differences between dDBS and oDBS. Two studies assessed quality-of-life measures with neither finding differences between dDBS and oDBS. TW or a surrogate measure was assessed in 6 studies; 5 studies found an increase or strong trend toward increase in dDBS relative to oDBS.ConclusionsThe current evidence, although limited by bias, does suggest that dDBS in the treatment of PD yields improvements in motor symptoms and quality of life that are comparable to oDBS; TW and surrogate measures are consistently improved in patients with PD under a directional configuration relative to omnidirectional.Copyright © 2022 Elsevier Inc. All rights reserved.

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