Evidence map›Paper›PMID 35305525›Full record

ArticleEpilepsy & behavior : E&B2022

Concurrent brain-responsive and vagus nerve stimulation for treatment of drug-resistant focal epilepsy.

Mesha-Gay Brown, Stefan Sillau, Danielle McDermott, Lia D Ernst, David C Spencer, Dario J Englot, Hernán F J González, Proleta Datta, Ioannis Karakis, Danielle Becker and 6 more

Open access · hybridAbstract readMulticenter Study
In one paragraph

Article in Epilepsy & behavior : E&B, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
4citing papers in PubMed, 1 pooled it
1.3field-weighted citation impact, top 20% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

4 citing papers in PubMed, 1 synthesis or guideline pooled it, 16 citations in OpenAlex.

  1. Pooled it
  2. Surgical re-evaluation patterns among pediatric vagus nerve stimulation non-responders: a single-center retrospective study.Child's nervous system : ChNS : official journal of the International Society for Pediatric Neurosurgery · 2026
    Article
  3. Review
  4. Review
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

16 authors at 11 institutions in 1 country.

Mesha-Gay BrownCentura Health Physician Group, Neuroscience and Spine, CO, United States.
Stefan SillauUniversity of Colorado, Department of Neurology, United States.
Danielle McDermottUniversity of Colorado, Department of Neurology, United States.
Lia D ErnstOregon Health & Science University, Department of Neurology, United States.
David C SpencerOregon Health & Science University, Department of Neurology, United States.
Dario J EnglotVanderbilt University Medical Center, Department of Neurological Surgery, United States.
Hernán F J GonzálezVanderbilt University, Department of Biomedical Engineering, United States.
Proleta DattaUniversity of Nebraska Medical Center, Department of Neurology, United States.
Ioannis KarakisEmory University School of Medicine, Department of Neurology, United States.
Danielle BeckerUniversity of Pennsylvania, Department of Neurology, United States.
John D RolstonUniversity of Utah, Departments of Neurosurgery and Biomedical Engineering, United States.
Amir ArainUniversity of Utah, Department of Neurology, United States.
Vikram R RaoUniversity of California, San Francisco, Department of Neurology and Weill Institute for Neurosciences, United States.
Michael DohertySwedish Neuroscience Institute, Department of Neurology, Seattle, United States.
Alexandra UrbanUniversity of Pittsburgh, Department of Neurology, United States.
Cornelia DreesUniversity of Colorado, Department of Neurology, United States; Mayo Clinic Arizona, Department of Neurology, United States. Electronic address: drees.cornelia@mayo.edu.
Oregon Health & Science University · USUniversity of Utah · USEmory University · USSwedish Medical Center · USUniversity of California, San Francisco · USUniversity of Nebraska Medical Center · USUniversity of Pennsylvania · USUniversity of Pittsburgh · USVanderbilt University · USVanderbilt University Medical Center · USWinnMed · US

Funding

MEDICAL SCIENTIST TRAINING PROGRAMT32GM007347 · NIGMS · VANDERBILT UNIVERSITY · PI WILLIAMS, CHRISTOPHER S. · 1985 to 2023
$26.3M
Medical Scientist Training ProgramT32GM152284 · NIGMS · VANDERBILT UNIVERSITY · PI Christopher S. Williams · 2024 to 2026
$4.8M
Patient-Specific Modeling and Network Perturbation to Enhance the Predictability of Direct Cortical Stimulation for EpilepsyK23NS114178 · NINDS · UNIVERSITY OF UTAH · PI ROLSTON, JOHN D · 2019 to 2023
$961k
NIGMS NIH HHS T32 GM007347NIGMS NIH HHS T32 GM152284NINDS NIH HHS K23 NS114178
6 · The paper itself

Abstract

objectiveClinical trials of a brain-responsive neurostimulator, RNS® System (RNS), excluded patients with a vagus nerve stimulator, VNS® System (VNS). The goal of this study was to evaluate seizure outcomes and safety of concurrent RNS and VNS stimulation in adults with drug-resistant focal-onset seizures.

methodsA retrospective multicenter chart review was performed on all patients with an active VNS and RNS who were treated for a minimum of 6 months with both systems concurrently. Frequency of disabling seizures at baseline before RNS, at 1 year after RNS placement, and at last follow-up were used to calculate the change in seizure frequency after treatment. Data on adverse events and complications related to each device were collected.

resultsSixty-four patients from 10 epilepsy centers met inclusion criteria. All but one patient received RNS after VNS. The median follow-up time after RNS implantation was 28 months. Analysis of the entire population of patients with active VNS and RNS systems revealed a median reduction in seizure frequency at 1 year post-RNS placement of 43% with a responder rate of 49%, and at last follow-up a 64% median reduction with a 67% responder rate. No negative interactions were reported from the concurrent use of VNS and RNS. Stimulation-related side-effects were reported more frequently in association with VNS (30%) than with RNS (2%). SIGNIFICANCE: Our findings suggest that concurrent treatment with VNS and RNS is safe and that the addition of RNS to VNS can further reduce seizure frequency.

Indexed as

Drug Resistant EpilepsyEpilepsies, PartialVagus Nerve StimulationAdultBrainHumansRetrospective StudiesTreatment OutcomeVagus NerveComplicationsDrug-resistant epilepsyNeuromodulationResponsive neurostimulationSeizure outcomeVagus nerve stimulation

Identifiers

PMID35305525
PMCPMC9339206
OpenAlexW4220825389

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.