Neurosurgery clinics of North America
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This article describes the basis for neuromodulation procedures for obsessive-compulsive disorder (OCD) and summarizes the literature on the efficacy of these interventions. Discussion includes neural circuitry underlying OCD pathology, the history and types of ablative procedures, the targets and modalities used for neuromodulation, and future therapeutic directions.
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Current DBS therapy delivers a train of electrical pulses at set stimulation parameters. This open-loop design is effective for movement disorders, but therapy may be further optimized by a closed loop design. ⋯ Neuronal oscillations may represent or facilitate the cooperative functioning of brain ensembles, and may provide critical information to customize neuromodulation therapy. This review addresses advances to date, not of the technology per se, but of the strategies to apply neuronal signals to trigger or modulate stimulation systems.
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Chronic neuropathic pain affects 8.2% of adults, extrapolated to roughly 18 million people every year in the United States. Patients who have pain that cannot be controlled with pharmacologic management or less invasive techniques can be considered for deep brain stimulation or motor cortex stimulation. These techniques are not currently approved by the Food and Drug Administration for chronic pain and are, thus, considered off-label use of medical devices for this patient population. Conclusive effectiveness studies are still needed to demonstrate the best targets as well as the reliability of the results with these approaches.
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Neurosurg. Clin. N. Am. · Jan 2014
ReviewSacral neuromodulation for refractory overactive bladder, interstitial cystitis, and painful bladder syndrome.
Various pelvic floor conditions, including overactive bladder syndrome and chronic pelvic pain, have been successfully managed with the neuromodulation of sacral nerves. Sacral neuromodulation is a minimally invasive procedure involving the implantation of a programmable pulse generator that delivers low-amplitude electrical current via quadripolar tined leads through the S3 foramen. Durable efficacy has been demonstrated in retrospective studies, but questions regarding ideal patient candidacy and optimal technical considerations remain unanswered.
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Neurosurg. Clin. N. Am. · Jan 2014
ReviewNeuromodulation for depression: invasive and noninvasive (deep brain stimulation, transcranial magnetic stimulation, trigeminal nerve stimulation).
Major depressive disorder is among the most disabling illnesses and, despite best practices with medication and psychotherapy, many patients remain ill even after several treatment trials. For many of these patients with treatment-resistant or pharmacoresistant depression, treatment with neuromodulation offers an alternative. ⋯ This review surveys recent literature to update readers on 3 particular interventions: deep brain stimulation, transcranial magnetic stimulation, and trigeminal nerve stimulation. Additional comparative research is needed to delineate the relative advantages of these treatments, and how best to match individual patients to neuromodulation intervention.