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Related Concept Videos

Motor Unit Stimulation01:20

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When the neuron of a motor unit fires an action potential, it triggers a series of events, leading to a twitch contraction in the muscle fibers. The process of excitation-contraction coupling is crucial in relaying the action potential to the muscle fibers.
The latent period of contraction marks the onset of excitation-contraction coupling, when the action potential propagates across the sarcolemma, preparing the muscle fibers for contraction. As the fibers enter the contraction phase, the...
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Related Experiment Video

Updated: Sep 10, 2025

Vagus Nerve Stimulation As an Adjunctive Neurostimulation Tool in Treatment-resistant Depression
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Programming in Vagus nerve stimulation therapy: Consensus from a Nordic Delphi Panel.

Oliver Henning1, Noemi Becser Andersen2, Fredrik Asztely3

  • 1National Center for Epilepsy, University Hospital, member of the European Reference Network EpiCARE, P.O. Box 4950 Nydalen, 0424 Oslo, Norway.

Seizure
|August 22, 2025
PubMed
Summary
This summary is machine-generated.

This study provides expert consensus on optimizing vagus nerve stimulation (VNS) therapy for drug-resistant epilepsy. Recommendations focus on proactive use of VNS parameters and advanced features for better patient outcomes.

Keywords:
Delphi consensusEpilepsyVNS treatment

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Area of Science:

  • Neurology
  • Epilepsy Treatment
  • Medical Device Technology

Background:

  • Vagus nerve stimulation (VNS) therapy is a recognized second-line treatment for drug-resistant epilepsy.
  • Current guidelines lack detailed recommendations for optimizing the use of VNS therapy's diverse parameter options.

Purpose of the Study:

  • To develop expert consensus-based recommendations for maximizing the utilization of VNS therapy parameters.
  • To provide detailed guidance for clinicians on VNS therapy programming and management.

Main Methods:

  • A 5-step Delphi approach was employed with 22 experts from Nordic countries.
  • Experts included pediatric neurologists, neurologists, and those treating both adult and pediatric patients.
  • Consensus was defined as ≥80% agreement for strong consensus and 60-79% for medium consensus.

Main Results:

  • The Delphi process resulted in 70 statements across various VNS programming aspects.
  • Strong consensus (≥80%) was achieved for 65.7% of statements.
  • Key areas of consensus included initial VNS setup, parameter adjustments, Autostimulation, scheduled programming, and Magnet mode usage.

Conclusions:

  • Recommendations advocate for proactive VNS parameter adjustments, including duty cycle, rapid cycling, and output current increases.
  • Encouragement for using Magnet mode and Autostimulation mode is provided.
  • Guidance on newer features like day-and-night and scheduled programming aims to improve feasibility and tolerability.