Juliana Passinho Azevedo Rodrigues, Maria Sheila Guimarães Rocha, Kaito Alves Carvalho Laube, Ricardo Iglesio, Paulo Roberto Terzian Filho, Julian Letícia de Freitas, Eberval Gadelha Figueiredo, Carlos Gilberto Carlotti, Diogo Coutinho Soriano, Fábio Godinho
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引用次数: 0
Abstract
Background: Deep brain stimulation (DBS) of the subthalamic nucleus (STN) relieves motor symptoms, including levodopa-responsive gait disorders in Parkinson's disease (PD). Traditionally, STN-DBS is not indicated to treat severe, clinically resistant axial symptoms. In this scenario, field H1 of Forel (FF) stimulation (FF-DBS) is likely a feasible option, given it improves motor symptoms, including freezing of gait (FOG), as shown by a short-term study. However, no data are available about the long-term effects of this therapy. Finally, no study has compared the long-term effects of FF and STN-DBS.
Objective: We report the long-term outcome (>five years) of bilateral FF-DBS in patients with PD. We also compare the effects of FF-DBS and STN-DBS on motor symptoms, cognition, and quality of life.
Materials and methods: We studied 22 patients (ten with FF-DBS and 12 with STN-DBS). Motor symptoms, cognition, quality of life, and gait symptoms were assessed using the motor part of the Movement Disorders Society Unified Parkinson's Disease Rating Scale (MDS-UPDRS III), the Mattis Dementia Rating Scale, the 39-item PD quality of life (PDQ-39), and the FOG questionnaire (FOG score) respectively. The levodopa equivalent daily dose was recorded. Comparisons of the FF and STN-DBS results were conducted.
Result: The mean follow-up was 6.18 years (95% CI: 5.57-6.78). Compared with the preoperative period, patients with FF had an average reduction of 32.2% in the MDS-UPDRS III scores (p < 0.01), a decrease of 35.3% in the FOG scores (p < 0.01), and an improvement of 25.9% in the PDQ-39 (p < 0.01). There was a 7.5% decrease in cognition (p < 0.01). Levodopa equivalent dose (LED) was reduced by 26.3% (p < 0.01). The STN group had an average reduction of 39.4% in the MDS-UPDRS III scores (p < 0.01), a decrease of 23.7% in the FOG scores (p < 0.01), and an improvement of 33.2% in the PDQ-39 scores (p < 0.01). Cognition decreased by 1.6% (p < 0.01) and LED by 15.06% (p = 0.02). Patients with FF-DBS were older than those with STN-DBS at the time of surgery: 61.2 years and 55.7 years, respectively (p = 0.02), and had longer duration of disease (p = 0.02). Patients with FF-DBS had a greater reduction in FOG (p = 0.02) than did the STN group and presented with a greater decrease in cognition (p < 0.01) after five years. STN-DBS had a greater effect on quality of life.
Conclusions: Both FF-DBS and STN-DBS relieved motor symptoms and improved quality of life over a long-term period. Patients with FF-DBS had a higher reduction in both FOG and in LED than did those with STN-DBS. These data support our hypothesis that FF-DBS is a safe and efficient option for treating motor symptoms in PD, including FOG in advanced stages.
期刊介绍：
Neuromodulation: Technology at the Neural Interface is the preeminent journal in the area of neuromodulation, providing our readership with the state of the art clinical, translational, and basic science research in the field. For clinicians, engineers, scientists and members of the biotechnology industry alike, Neuromodulation provides timely and rigorously peer-reviewed articles on the technology, science, and clinical application of devices that interface with the nervous system to treat disease and improve function.
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