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Clinical usefulness of the electroencephalogram in acute stroke: a preliminary study

2018-10-17Journal article Open access
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dc.contributor.authorBorges, Daniel Filipe
dc.contributor.authorSilva, Mariana
dc.contributor.authorFerreira, Axel
dc.contributor.authorCoelho, Paulo Simões
dc.contributor.authorPereira, Telmo
dc.contributor.authorConde, Jorge
dc.date.accessioned2019-06-03T10:01:21Z
dc.date.available2019-06-03T10:01:21Z
dc.date.issued2018-10-17
dc.description.abstractIntroduction: Stroke is the main cause of disability worldwide, being the first cause of death in Portugal. In the first hours of the event, the cranioencephalic CT scan (CT Scan) does not show the lesion in about 74% of cases, making validation of alternative diagnostic approaches of utmost importance. The electroencephalogram (EEG) may provide useful information for the diagnosis and prognosis of stroke. Objective: To study the potential usefulness of the EEG for the early diagnosis of acute stroke in patients with initial negative CT Scan, and for the evaluation of the functional status and risk of epilepsy. Methods: Retrospective analysis of patients with ischemic stroke who underwent EEG and acute phase CT scan between January 2014 and February 2018. Patient characteristics and stroke were classified according to the Oxfordshire Community Stroke Project (OCSP) criteria. The patients were functionally evaluated at 12 months post-stroke by the modified Rankin Scale (mRS) and the existence of post-stroke epilepsy was determined by telephone interview on February 2018. Results: Thirty patients (25 females and 5 males, mean age 70.5 years) were included. According to the OCSP were identified: 40% TACS, 37% PACS, 10% LACS and 13% POCS. 50% with acute vascular injury visible on the initial CT Scan performed with 7 hours of evolution in median. All patients underwent EEG with a median of 3 days of evolution, and slow focal activity was observed in all patients, and focal paroxysmal activity (PA) was seen in 17% of the participants. 17 patients (58% of patients) developed post-stroke epilepsy (PSE) with 4 of these having PA evidence in the initial EEG (24%). One of the patients with PA in the initial EEG did not develop epilepsy during a 4 years follow-up period. In patients without PA, the average of mRs at follow-up was 3.8 and the mortality was 24%, whereas in patients with PA, the mean of the mRs was 5.0 and the mortality was 40%. Conclusion: In this study, unlike CT Scan, the acute-phase EEG presented with abnormal features in all patients with acute stroke, therefore the EEG may potentially provide significant diagnostic information, estimates of risk for developing future epilepsy and also overall risk stratification. Further studies are needed to validate this hypothesis.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationMariana S, Axel F, Paulo C, Daniel Filipe B, Telmo P, et al. Clinical Usefulness of the Electroencephalogram in Acute Stroke – A Preliminary Study. Arch Neurol & Neurosci. 1(3): 2018. ANN.MS.ID.000514. DOI: 10.33552/ANN.2018.01.000514.pt_PT
dc.identifier.doi10.33552/ANN.2018.01.000514pt_PT
dc.identifier.issn2641-1911
dc.identifier.urihttp://hdl.handle.net/10400.26/28795
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherIRIS PUBLISHERSpt_PT
dc.rights.urihttp://creativecommons.org/licenses/by-nc-sa/4.0/pt_PT
dc.subjectEletroencephalogrampt_PT
dc.subjectStrokept_PT
dc.subjectEpilepsypt_PT
dc.subjectCT scanpt_PT
dc.subjectEletroencefalografiapt_PT
dc.subjectAcidente Vascular Cerebralpt_PT
dc.subjectEpilepsiapt_PT
dc.subjectTomografia Computorizadapt_PT
dc.titleClinical usefulness of the electroencephalogram in acute stroke: a preliminary studypt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage7pt_PT
oaire.citation.issue3pt_PT
oaire.citation.startPage1pt_PT
oaire.citation.titleArchives in Neurology & Neurosciencept_PT
oaire.citation.volume1pt_PT
person.familyNameBorges
person.familyNamePereira
person.familyNameConde
person.givenNameDaniel Filipe
person.givenNameTelmo
person.givenNameJorge
person.identifier3235598
person.identifier779139
person.identifier.ciencia-id0217-87F9-58DF
person.identifier.ciencia-idEB19-9F1B-9811
person.identifier.ciencia-id9817-ABCE-36C0
person.identifier.orcid0000-0003-0189-7908
person.identifier.orcid0000-0001-9119-7774
person.identifier.orcid0000-0002-2225-8569
person.identifier.ridJVO-1831-2024
person.identifier.ridM-4626-2013
person.identifier.scopus-author-id57912703700
person.identifier.scopus-author-id24391294200
person.identifier.scopus-author-id55658768000
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublication2050231b-193b-43bf-8d0a-ed0bb9051b4e
relation.isAuthorOfPublication85969647-47cc-47ee-bec2-1360f30ae958
relation.isAuthorOfPublicationa23d17a5-1427-45f9-9f28-dabc2a3b4345
relation.isAuthorOfPublication.latestForDiscovery2050231b-193b-43bf-8d0a-ed0bb9051b4e

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