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植入式迷走神經刺激系統(Vagus Nerve Stimulation)對憂鬱症似乎長期有效且較少復發

植入式迷走神經刺激系統(Vagus Nerve Stimulation)對憂鬱症似乎長期有效且較少復發
Vagus nerve stimulation for the treatment of depression and other neuropsychiatric disorders.
Expert Rev Neurother. 2007; 7(1):63-74 (ISSN: 1744-8360)
George MS; Nahas Z; Borckardt JJ; Anderson B; Burns C; Kose S; Short EB
Institute of Psychiatry MUSC, Brain Stimulation Laboratory, 67 President Street, Room 502 North, Charleston, SC 29425, USA.

Vagus nerve stimulation is an interesting new approach to treating neuropsychiatric diseases within the class of brain-stimulation devices sometimes labeled 'neuromodulators'. With vagus nerve stimulation, a battery-powered generator implanted in the chest wall connects to a wire wrapped around the vagus nerve in the neck, and sends intermittent pulses of electricity along the nerve directly into the brain. This mechanism takes advantage of the natural role of the vagus nerve in conveying information into the brain concerning homeostatic information (e.g., hunger, chest pain and respirations). Vagus nerve stimulation therapy is US FDA approved for the adjunctive treatment of epilepsy and has recently been FDA approved for the treatment of medication-resistant depression. Owing to its novel route into the brain, it has no drug-drug interactions or systemic side effects. This treatment also appears to have high long-term tolerability in patients, with low rates of patients relapsing on vagus nerve stimulation or becoming tolerant. However, alongside the excitement and enthusiasm for this new treatment, a lack of Class I evidence of efficacy in treating depression is currently slowing down adoption by psychiatrists. Much more research is needed regarding exactly how to refine and deliver the electrical pulses and how this differentially affects brain function in health and disease.

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