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Responsive neurostimulation in epilepsy

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References

  • Papers of special note have been highlighted as:
  • of interest
  • ●● of considerable interest
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● Report of the multicenter, double-blind, randomized controlled trial that assessed the safety and effectiveness of the RNS system as an adjunctive therapy for partial onset seizures in adults with medically refractory epilepsy. This study provided Class I evidence that responsive cortical stimulation is effective in significantly reducing seizure frequency in adults who have failed two or more anti-epileptic medication trials, three or more seizures per month, and one or two seizure foci. Subsequently, the RNS system was granted FDA clearance for this indication.

  • Lesser RP, Kim SH, Beyderman L, et al. Brief bursts of pulse stimulation terminate after discharges caused by cortical stimulation. Neurology. 1999;53(9):2073–2081.
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●● The authors give an overview of the current clinical experience with closed-loop stimulation for the treatment of pain, epilepsy and movement disorders.

  • Heck CN, King-Stephens D, Massey AD, et al. Two-year seizure reduction in adults with medically intractable partial onset epilepsy treated with responsive neurostimulation: final results of the RNS System Pivotal trial. Epilepsia. 2014;55(3):432–441.
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● Report of the multicenter, double-blind, randomized trial of bilateral stimulation of the anterior nuclei of the thalamus for localization-related epilepsy that led to its FDA clearance for this indication. Bilateral ANT-DBS was shown to reduce seizures and benefit persisted for 2 years of study.

  • Meador KJ, Kapur R, Loring DW, et al., Investigators RNSSPT. Quality of life and mood in patients with medically intractable epilepsy treated with targeted responsive neurostimulation. Epilepsy & Behavior: E&B. 2015;45:242–247.
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  • Ben-Menachem E. Vagus-nerve stimulation for the treatment of epilepsy. Lancet Neurol. 2002;1(8):477–482.

●● Provides a clear overview on Vagus Nerve Stimulation, highlighting its assumed mechanism of action, the implantation procedure and clinical results achieved through years of clinical experience.

  • Ben-Menachem E, Manon-Espaillat R, Ristanovic R, et al. Vagus nerve stimulation for treatment of partial seizures: 1. A controlled study of effect on seizures. First International Vagus Nerve Stimulation Study Group. Epilepsia. 1994;35(3):616–626.

● Report of the multicenter, prospectively randomized, parallel, double-blind study of vagus nerve stimulation in patients with refractory partial seizures. This study confirmed the effectiveness of VNS as treatment for epilepsy patients with refractory partial seizures and ultimately led to the FDA clearance of VNS for this indication.

  • Ben-Menachem E, Hellstrom K, Waldton C, et al. Evaluation of refractory epilepsy treated with vagus nerve stimulation for up to 5 years. Neurology. 1999;52(6):1265–1267.
  • Elliott RE, Morsi A, Tanweer O, et al. Efficacy of vagus nerve stimulation over time: review of 65 consecutive patients with treatment-resistant epilepsy treated with VNS > 10 years. Epilepsy & Behavior: E&B. 2011;20(3):478–483.
  • Fisher RS, Eggleston KS, Wright CW. Vagus nerve stimulation magnet activation for seizures: a critical review. Acta Neurol Scand. 2015;131(1):1–8.
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●● The authors present an overview of the development of optogenetics and review recent studies investigating optogenetic modification of circuits involved in epileptic seizures.

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