Evidence map›Paper›PMID 29659050›Full record

ArticleAnnals of neurology2018

Continuous electroencephalography predicts delayed cerebral ischemia after subarachnoid hemorrhage: A prospective study of diagnostic accuracy.

Eric S Rosenthal, Siddharth Biswal, Sahar F Zafar, Kathryn L O'Connor, Sophia Bechek, Apeksha V Shenoy, Emily J Boyle, Mouhsin M Shafi, Emily J Gilmore, Brandon P Foreman and 9 more

Registry-linked trialAbstract read
In one paragraph

Article in Annals of neurology, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT05103566 (STORM), which is not on this map. Cited by 65 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
65citing papers in PubMed, 4 pooled it
11.7field-weighted citation impact, top 1% 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.

NCT05103566 narecruitingnot on this mapstarted 2022, after this paper: background citation

STORM: Safety, Feasibility, and Efficacy of Non-invasive Vagus Nerve Stimulation (nVNS) in the Treatment of Aneurysmal Subarachnoid Hemorrhage

TypeinterventionalSponsorMassachusetts General HospitalRan2022 to 2029Enrolled25ConditionsSubarachnoid Hemorrhage, AneurysmalArmsgammaCore
3 · Its place in the literature

Who cites it

65 citing papers in PubMed, 4 syntheses or guidelines pooled it, 173 citations in OpenAlex.

  1. Guideline
  2. Pooled it
  3. Pooled it
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  5. Article
  6. Resting-state EEG for continuous prognostic monitoring and prediction of coma recovery after acute brain injury.Clinical neurophysiology : official journal of the International Federation of Clinical Neurophysiology · 2026
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  15. Scalp EEG predicts intracranial brain activity in humans.bioRxiv : the preprint server for biology · 2025
    Article
  16. Analysis of endovascular treatment for cerebral vasospasms after subarachnoid hemorrhage in the Japanese Registry of Neuroendovascular Therapy 4.Interventional neuroradiology : journal of peritherapeutic neuroradiology, surgical procedures and related neurosciences · 2025
    Article
  17. Article
  18. Review
  19. Using artificial intelligence to optimize anti-seizure treatment and EEG-guided decisions in severe brain injury.Neurotherapeutics : the journal of the American Society for Experimental NeuroTherapeutics · 2025
    Review
  20. Review

5 more citing papers are in PubMed but not listed here.

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 5 institutions in 2 countries.

Eric S RosenthalDivision of Neurocritical Care and Emergency Neurology, Massachusetts General Hospital, Boston, MA.ORCID 0000-0003-3900-356X
Siddharth BiswalDivision of Neurocritical Care and Emergency Neurology, Massachusetts General Hospital, Boston, MA.
Sahar F ZafarDivision of Neurocritical Care and Emergency Neurology, Massachusetts General Hospital, Boston, MA.
Kathryn L O'ConnorDivision of Neurocritical Care and Emergency Neurology, Massachusetts General Hospital, Boston, MA.
Sophia BechekDivision of Neurocritical Care and Emergency Neurology, Massachusetts General Hospital, Boston, MA.
Apeksha V ShenoyDivision of Neurocritical Care and Emergency Neurology, Massachusetts General Hospital, Boston, MA.
Emily J BoyleDivision of Neurocritical Care and Emergency Neurology, Massachusetts General Hospital, Boston, MA.
Mouhsin M ShafiDepartment of Neurology, Beth Israel Deaconess Medical Center, Boston, MA.
Emily J GilmoreDivision of Neurocritical Care and Emergency Neurology, Yale-New Haven Hospital, New Haven, CT.
Brandon P ForemanDepartment of Neurology and Rehabilitation Medicine, University of Cincinnati, Cincinnati, OH.ORCID 0000-0002-5418-674X
Nicolas GaspardDepartment of Neurology, Comprehensive Epilepsy Center, Free University of Brussels, Erasmus Hospital, Brussels, Belgium.
Thabele M Leslie-MazwiDivision of Neurocritical Care and Emergency Neurology, Massachusetts General Hospital, Boston, MA.
Jonathan RosandDivision of Neurocritical Care and Emergency Neurology, Massachusetts General Hospital, Boston, MA.
Daniel B HochEpilepsy Service and Division of Clinical Neurophysiology, Massachusetts General Hospital, Boston, MA.
Cenk AyataDivision of Vascular Neurology, Massachusetts General Hospital, Boston, MA.
Sydney S CashEpilepsy Service and Division of Clinical Neurophysiology, Massachusetts General Hospital, Boston, MA.
Andrew J ColeEpilepsy Service and Division of Clinical Neurophysiology, Massachusetts General Hospital, Boston, MA.ORCID 0000-0002-0828-826X
Aman B PatelDepartment of Neurosurgery, Massachusetts General Hospital, Boston, MA.
M Brandon WestoverEpilepsy Service and Division of Clinical Neurophysiology, Massachusetts General Hospital, Boston, MA.
Massachusetts General Hospital · USBeth Israel Deaconess Medical Center · USErasmus Hospital · BEUniversity of Cincinnati · USYale New Haven Hospital · US

Funding

Real-Time Prediction of Delayed Cerebral Ischemia after Subarachnoid HemorrhageK23NS105950 · NINDS · MASSACHUSETTS GENERAL HOSPITAL · PI ROSENTHAL, ERIC S. · 2018 to 2022
$1.0M
Quantitative Monitoring and Control of Sedation and Pain in the ICU EnvironmentK23NS090900 · NINDS · MASSACHUSETTS GENERAL HOSPITAL · PI WESTOVER, MICHAEL BRANDON · 2014 to 2018
$988k
NINDS NIH HHS K23 NS090900NINDS NIH HHS K23 NS105950
6 · The paper itself

Abstract

objectiveDelayed cerebral ischemia (DCI) is a common, disabling complication of subarachnoid hemorrhage (SAH). Preventing DCI is a key focus of neurocritical care, but interventions carry risk and cannot be applied indiscriminately. Although retrospective studies have identified continuous electroencephalographic (cEEG) measures associated with DCI, no study has characterized the accuracy of cEEG with sufficient rigor to justify using it to triage patients to interventions or clinical trials. We therefore prospectively assessed the accuracy of cEEG for predicting DCI, following the Standards for Reporting Diagnostic Accuracy Studies.

methodsWe prospectively performed cEEG in nontraumatic, high-grade SAH patients at a single institution. The index test consisted of clinical neurophysiologists prospectively reporting prespecified EEG alarms: (1) decreasing relative alpha variability, (2) decreasing alpha-delta ratio, (3) worsening focal slowing, or (4) late appearing epileptiform abnormalities. The diagnostic reference standard was DCI determined by blinded, adjudicated review. Primary outcome measures were sensitivity and specificity of cEEG for subsequent DCI, determined by multistate survival analysis, adjusted for baseline risk.

resultsOne hundred three of 227 consecutive patients were eligible and underwent cEEG monitoring (7.7-day mean duration). EEG alarms occurred in 96.2% of patients with and 19.6% without subsequent DCI (1.9-day median latency, interquartile range = 0.9-4.1). Among alarm subtypes, late onset epileptiform abnormalities had the highest predictive value. Prespecified EEG findings predicted DCI among patients with low (91% sensitivity, 83% specificity) and high (95% sensitivity, 77% specificity) baseline risk.

interpretationcEEG accurately predicts DCI following SAH and may help target therapies to patients at highest risk of secondary brain injury. Ann Neurol 2018;83:958-969.

Indexed as

ElectroencephalographyAdultAgedBrain IschemiaCerebral InfarctionFemaleHumansMaleMiddle AgedMonitoring, PhysiologicProspective StudiesRetrospective StudiesSensitivity and SpecificitySubarachnoid Hemorrhage

Identifiers

PMID29659050
PMCPMC6021198
OpenAlexW2800554791

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Registered trials

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.