Evidence map›Paper›PMID 34528103›Full record

Observational studyNeurosurgery2021

Real-World Preliminary Experience With Responsive Neurostimulation in Pediatric Epilepsy: A Multicenter Retrospective Observational Study.

Yasunori Nagahama, Thomas M Zervos, Kristina K Murata, Lynette Holman, Torin Karsonovich, Jonathon J Parker, Jia-Shu Chen, H Westley Phillips, Marytery Fajardo, Hiroki Nariai and 9 more

Open access · greenAbstract readMulticenter StudyObservational Study
In one paragraph

Observational study in Neurosurgery, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed, 1 pooled it
4.4field-weighted citation impact, top 4% 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

22 citing papers in PubMed, 1 synthesis or guideline pooled it, 54 citations in OpenAlex.

  1. Neurostimulation in children with drug-resistant epilepsy: strategies in subcortical targeting and systematic review of the evidence.Child's nervous system : ChNS : official journal of the International Society for Pediatric Neurosurgery · 2025
    Pooled it
  2. Article
  3. Review
  4. Article
  5. Review
  6. Article
  7. Article
  8. Fast ripple band high-frequency activity associated with thalamic sleep spindles in pediatric epilepsy.Clinical neurophysiology : official journal of the International Federation of Clinical Neurophysiology · 2025
    Article
  9. Article
  10. The role of neuromodulation in the management of drug-resistant epilepsy.Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology · 2024
    Review
  11. Article
  12. A pediatrician's guide to epilepsy surgery.Current problems in pediatric and adolescent health care · 2024
    Article
  13. Article
  14. Article
  15. Review
  16. Characteristics of ictal thalamic EEG in pediatric-onset neocortical focal epilepsy.Clinical neurophysiology : official journal of the International Federation of Clinical Neurophysiology · 2023
    Article
  17. Characteristics of ictal thalamic EEG in pediatric-onset neocortical focal epilepsy.medRxiv : the preprint server for health sciences · 2023
    Article
  18. Review
  19. Review
  20. Towards network-guided neuromodulation for epilepsy.Brain : a journal of neurology · 2022
    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

19 authors at 7 institutions in 1 country.

Yasunori NagahamaDepartment of Neurosurgery, University of California Los Angeles, Los Angeles, California, USA.ORCID 0000-0003-4347-5367
Thomas M ZervosDepartment of Neurosurgery, Henry Ford Hospital, Detroit, Michigan, USA.ORCID 0000-0001-8397-5388
Kristina K MurataDepartment of Pediatrics, University of California Los Angeles, Los Angeles, California, USA.
Lynette HolmanDivision of Pediatric Neurosurgery, Primary Children's Hospital, University of Utah, Salt Lake City, Utah, USA.
Torin KarsonovichDepartment of Neurosurgery, Carle BroMenn Medical Center, Normal, Illinois, USA.
Jonathon J ParkerDivision of Pediatric Neurosurgery, Lucile Packard Children's Hospital, Stanford University, Palo Alto, California, USA.
Jia-Shu ChenWarren Alpert Medical School of Brown University, Providence, Rhode Island, USA.
H Westley PhillipsDepartment of Neurosurgery, University of California Los Angeles, Los Angeles, California, USA.
Marytery FajardoDivision of Neurology, Brain Institute, Nicklaus Children's Hospital, Miami, Florida, USA.
Hiroki NariaiDepartment of Pediatrics, University of California Los Angeles, Los Angeles, California, USA.
Shaun A HussainDepartment of Pediatrics, University of California Los Angeles, Los Angeles, California, USA.
Brenda E PorterDivision of Pediatric Neurology, Lucile Packard Children's Hospital, Stanford University, Palo Alto, California, USA.
Gerald A GrantDivision of Pediatric Neurosurgery, Lucile Packard Children's Hospital, Stanford University, Palo Alto, California, USA.
John RaghebDivision of Neurosurgery, Brain Institute, Nicklaus Children's Hospital, Miami, Florida, USA.
Shelly WangDivision of Neurosurgery, Brain Institute, Nicklaus Children's Hospital, Miami, Florida, USA.
Brent R O'NeillDivision of Pediatric Neurosurgery, Children's Hospital Colorado, Aurora, Colorado, USA.
Allyson L AlexanderDivision of Pediatric Neurosurgery, Children's Hospital Colorado, Aurora, Colorado, USA.
Robert J BolloDivision of Pediatric Neurosurgery, Primary Children's Hospital, University of Utah, Salt Lake City, Utah, USA.ORCID 0000-0003-0003-6372
Aria FallahDepartment of Neurosurgery, University of California Los Angeles, Los Angeles, California, USA.ORCID 0000-0002-9703-0964
University of California, Los Angeles · USLucile Packard Children's Hospital · USMiami Children's Hospital · USChildren's Hospital Colorado · USPrimary Children's Hospital · USBrown University · USHenry Ford Hospital · US

Funding

UCLA Neurosurgery Research Training and Education ProgramR25NS079198 · NINDS · UNIVERSITY OF CALIFORNIA LOS ANGELES · PI LIAU, LINDA M · 2012 to 2021
$1.2M
NINDS NIH HHS R25 NS079198
6 · The paper itself

Abstract

backgroundDespite the well-documented utility of responsive neurostimulation (RNS, NeuroPace) in adult epilepsy patients, literature on the use of RNS in children is limited.

objectiveTo determine the real-world efficacy and safety of RNS in pediatric epilepsy patients.

methodsPatients with childhood-onset drug-resistant epilepsy treated with RNS were retrospectively identified at 5 pediatric centers. Reduction of disabling seizures and complications were evaluated for children (<18 yr) and young adults (>18 yr) and compared with prior literature pertaining to adult patients.

resultsOf 35 patients identified, 17 were <18 yr at the time of RNS implantation, including a 3-yr-old patient. Four patients (11%) had concurrent resection. Three complications, requiring additional surgical interventions, were noted in young adults (2 infections [6%] and 1 lead fracture [3%]). No complications were noted in children. Among the 32 patients with continued therapy, 2 (6%) achieved seizure freedom, 4 (13%) achieved ≥90% seizure reduction, 13 (41%) had ≥50% reduction, 8 (25%) had <50% reduction, and 5 (16%) experienced no improvement. The average follow-up duration was 1.7 yr (median 1.8 yr, range 0.3-4.8 yr). There was no statistically significant difference for seizure reduction and complications between children and young adults in our cohort or between our cohort and the adult literature.

conclusionThese preliminary data suggest that RNS is well tolerated and an effective off-label surgical treatment of drug-resistant epilepsy in carefully selected pediatric patients as young as 3 yr of age. Data regarding long-term efficacy and safety in children will be critical to optimize patient selection.

Indexed as

Deep Brain StimulationDrug Resistant EpilepsyEpilepsyChildCohort StudiesHumansRetrospective StudiesSeizuresYoung AdultBrain stimulationChildrenClosed-loopEloquent cortexMultifocal epilepsyNeuromodulation

Identifiers

PMID34528103
PMCPMC8637802
OpenAlexW3200811866

What OpenQuestion holds

Textmetadata
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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.