Evidence map›Paper›PMID 28419330›Full record

SynthesisNeurosurgery2018

Seizure Outcomes in Occipital Lobe and Posterior Quadrant Epilepsy Surgery: A Systematic Review and Meta-Analysis.

Stephen C Harward, William C Chen, John D Rolston, Michael M Haglund, Dario J Englot

Abstract readMeta-AnalysisSystematic Review
In one paragraph

Synthesis in Neurosurgery, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed, 1 pooled it
3.1field-weighted citation impact, top 8% 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

17 citing papers in PubMed, 1 synthesis or guideline pooled it, 47 citations in OpenAlex.

  1. Pooled it
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  8. Multimodal prognostic features of seizure freedom in epilepsy surgery.Journal of neurology, neurosurgery, and psychiatry · 2022
    Review
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

5 authors at 3 institutions in 1 country.

Stephen C HarwardDepartment of Neurosurgery, Duke University School of Medicine, Durham, North Carolina.
William C ChenDepartment of Neuro-logical Surgery, University of California San Francisco, San Francisco, California.
John D RolstonDepartment of Neuro-logical Surgery, University of California San Francisco, San Francisco, California.
Michael M HaglundDepartment of Neurosurgery, Duke University School of Medicine, Durham, North Carolina.
Dario J EnglotDepartment of Neurological Surgery, Vanderbilt University Medical Center, Nashville, Tennessee.
University of California, San Francisco · USVanderbilt University Medical Center · USDuke University · US

Funding

MULTIMODAL MAPPING OF SUBCORTICAL AND CORTICAL FUNCTIONAL NETWORK DISTURBANCES IN FOCAL EPILEPSYR00NS097618 · NINDS · VANDERBILT UNIVERSITY MEDICAL CENTER · PI ENGLOT, DARIO J · 2017 to 2019
$743k
MULTIMODAL MAPPING OF SUBCORTICAL AND CORTICAL FUNCTIONAL NETWORK DISTURBANCES IN FOCAL EPILEPSYK99NS097618 · NINDS · VANDERBILT UNIVERSITY MEDICAL CENTER · PI ENGLOT, DARIO J · 2016 to 2016
$83k
NINDS NIH HHS K99 NS097618NINDS NIH HHS R00 NS097618
6 · The paper itself

Abstract

backgroundOccipital lobe epilepsy (OLE) is an uncommon but debilitating focal epilepsy syndrome with seizures often refractory to medical management. While surgical resection has proven a viable treatment, previous studies examining postoperative seizure freedom rates are limited by small sample size and patient heterogeneity, thus exhibiting significant variability in their results.

objectiveTo review the medical literature on OLE so as to investigate rates and predictors of both seizure freedom and visual outcomes following surgery.

methodsWe reviewed manuscripts exploring surgical resection for drug-resistant OLE published between January 1990 and June 2015 on PubMed. Seizure freedom rates were analyzed and potential predictors were evaluated with separate meta-analyses. Postoperative visual outcomes were also examined.

resultsWe identified 27 case series comprising 584 patients with greater than 1 yr of follow-up. Postoperative seizure freedom (Engel class I outcome) was observed in 65% of patients, and was significantly predicted by age less than 18 yr (odds ratio [OR] 1.54, 95% confidence interval [CI] 1.13-2.18), focal lesion on pathological analysis (OR 2.08, 95% CI 1.58-2.89), and abnormal preoperative magnetic resonance imaging (OR 3.24, 95% 2.03-6.55). Of these patients, 175 also had visual outcomes reported with 57% demonstrating some degree of visual decline following surgery. We did not find any relationship between postoperative visual and seizure outcomes.

conclusionSurgical resection for OLE is associated with favorable outcomes with nearly two-thirds of patients achieving postoperative seizure freedom. However, patients must be counseled regarding the risk of visual decline following surgery.

Indexed as

Drug Resistant EpilepsyElectroencephalographyEpilepsies, PartialFemaleHumansMaleSeizuresTreatment OutcomeVision Disorders

Identifiers

PMID28419330
PMCPMC5640459
OpenAlexW4213262278

What OpenQuestion holds

Textmetadata
LicenceTDM
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.