Evidence map›Paper›PMID 34880163›Full record

ArticleNeurologia medico-chirurgica2022

Predictors of Seizure Outcome after Repeat Pediatric Epilepsy Surgery: Reasons for Failure, Sex, Electrophysiology, and Temporal Lobe Surgery.

Masaki Iwasaki, Keiya Iijima, Yutaro Takayama, Takahiro Kawashima, Hisateru Tachimori, Yuiko Kimura, Suguru Yokosako, Kenzo Kosugi, Yuu Kaneko

Open access · goldAbstract read
In one paragraph

Article in Neurologia medico-chirurgica, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.

0numbers the graph read from it
0cells of the map it votes in
3citing papers in PubMed
0.6field-weighted citation impact, top 33% 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

3 citing papers in PubMed, 7 citations in OpenAlex.

  1. Seminars in epileptology: Presurgical epilepsy evaluation.Epileptic disorders : international epilepsy journal with videotape · 2025
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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

9 authors at 1 institution in 1 country.

Masaki IwasakiDepartment of Neurosurgery, National Center Hospital, National Center of Neurology and Psychiatry.
Keiya IijimaDepartment of Neurosurgery, National Center Hospital, National Center of Neurology and Psychiatry.
Yutaro TakayamaDepartment of Neurosurgery, National Center Hospital, National Center of Neurology and Psychiatry.
Takahiro KawashimaDepartment of Clinical Data Science, Clinical Research and Education Promotion Division, National Center of Neurology and Psychiatry.
Hisateru TachimoriDepartment of Clinical Data Science, Clinical Research and Education Promotion Division, National Center of Neurology and Psychiatry.
Yuiko KimuraDepartment of Neurosurgery, National Center Hospital, National Center of Neurology and Psychiatry.
Suguru YokosakoDepartment of Neurosurgery, National Center Hospital, National Center of Neurology and Psychiatry.
Kenzo KosugiDepartment of Neurosurgery, National Center Hospital, National Center of Neurology and Psychiatry.
Yuu KanekoDepartment of Neurosurgery, National Center Hospital, National Center of Neurology and Psychiatry.
National Center of Neurology and Psychiatry · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Considering that seizure freedom is one of the most important goals in the treatment of epilepsy, repeat epilepsy surgery could be considered for patients who continue to experience drug-resistant seizures after epilepsy surgery. However, the chance of seizure freedom is reported to be below 50% after reoperation for failed epilepsy surgery. This study aimed to elucidate the predictive factors for seizure outcomes after repeat pediatric epilepsy surgery. In all, 39 pediatric patients who underwent repeat curative epilepsy surgery between 2008 and 2020 at our institution were retrospectively studied. The relationship between preoperative clinical factors and postoperative seizure freedom at the last follow-up was statistically evaluated. The mean age at the first surgery was 5.5 years (0-16). The etiology of epilepsy was malformation of cortical development in 33 patients. The average time to seizure recurrence after the first surgery was 6.4 months (range, 0-26 months). In all, 16 patients (41.0%) achieved seizure freedom after the second surgery. Seven patients underwent a third surgery, and three (42.9%) achieved seizure freedom. Overall, 19 patients achieved seizure freedom after repeat epilepsy surgery (48.7%). Female sex, surgical failure due to technical limitations, congruent electroencephalography (EEG) findings, lesional magnetic resonance imaging (MRI) and Rt-sided surgery were predictive of seizure freedom, and surgery limited to the temporal lobe was predictive of residual seizures, as determined in the multivariate analysis. The reoperation of failed epilepsy surgery is challenging. Consideration of the above predictive factors can be helpful in deciding whether to reoperate on pediatric patients whose initial surgical intervention failed.

Indexed as

EpilepsyEpilepsy, Temporal LobeChildElectroencephalographyElectrophysiologyFemaleHumansMagnetic Resonance ImagingReoperationRetrospective StudiesSeizuresTemporal LobeTreatment Outcomefocal cortical dysplasialobectomyseizure outcomesurgical failure

Identifiers

PMID34880163
PMCPMC8918369
OpenAlexW4200167136

What OpenQuestion holds

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Registered trials

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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.