{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,31]],"date-time":"2026-08-31T12:18:24Z","timestamp":1788178704266,"version":"build-2803163510"},"reference-count":24,"publisher":"SAGE Publications","license":[{"start":{"date-parts":[[2026,8,28]],"date-time":"2026-08-28T00:00:00Z","timestamp":1787875200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"},{"start":{"date-parts":[[2026,8,28]],"date-time":"2026-08-28T00:00:00Z","timestamp":1787875200000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"content-domain":{"domain":["journals.sagepub.com"],"crossmark-restriction":true},"short-container-title":["Clin EEG Neurosci"],"abstract":"<jats:sec>\n                    <jats:title>Background<\/jats:title>\n                    <jats:p>To evaluate the use, diagnostic yield, and timing of EEG in emergency department (ED) patients receiving second-line intravenous antiseizure medication (IV ASM).<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>We retrospectively reviewed patients aged \u226516 years who received IV ASM at Tampere University Hospital over one year. Episodes were categorized by status epilepticus (SE) subtype and arrival time (office vs off-hours). Timing of ASM\/EEG and EEG's diagnostic contribution were analyzed.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>We identified 132 episodes in 116 patients (41% female; median age 66 years). Convulsive SE (CSE) was most common (n\u2009=\u200941), followed by nonconvulsive SE (NCSE, n\u2009=\u200921), comatose SE (n\u2009=\u200910), and focal aware SE (FASE, n\u2009=\u20098). Recurrent seizures (n\u2009=\u200932) and postictal states (n\u2009=\u200920) were also included to highlight diagnostic challenges. Median IV ASM timing was 55\u2005min post-ED arrival. EEG was substantially delayed (median 13\u2005h 34\u2005min). 70% arrived off-hours, when EEGs were performed less frequently (63% vs 87%; p\u2009=\u20090.006) and later (16\u2005h 12\u2005min vs 2\u2005h 41\u2005min; p\u2009&lt;\u20090.001). In 94% of off-hours cases, ASM was given before EEG. EEG was diagnostic in 86% NCSE and 80% comatose SE cases. Post-treatment, EEG revealed ongoing SE in 39% overall (15% CSE).<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>EEG is essential for diagnosing NCSE and comatose SE and for assessing treatment response in all SE types. However, marked delays, particularly during off-hours, limit its clinical utility. Improving rapid EEG access in ED may enhance diagnostic accuracy and guide timely therapeutic decisions.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1177\/15500594261467533","type":"journal-article","created":{"date-parts":[[2026,8,28]],"date-time":"2026-08-28T12:47:46Z","timestamp":1787921266000},"update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":0,"title":["Emergent EEG in Status Epilepticus: Off-Hours Delays Limit Clinical Utility"],"prefix":"10.1177","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-1062-4277","authenticated-orcid":false,"given":"Teemu","family":"P\u00f6yt\u00e4kangas","sequence":"first","affiliation":[{"name":"Vaasa Central Hospital"},{"name":"Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2239-7681","authenticated-orcid":false,"given":"Pabitra","family":"Basnyat","sequence":"additional","affiliation":[{"name":"Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland"},{"name":"Tampere University Hospital"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jukka","family":"Saarinen","sequence":"additional","affiliation":[{"name":"Vaasa Central Hospital"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sirpa","family":"Rainesalo","sequence":"additional","affiliation":[{"name":"The Wellbeing Services County of Pirkanmaa, Tampere, Finland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4119-8063","authenticated-orcid":false,"given":"Jukka","family":"Peltola","sequence":"additional","affiliation":[{"name":"Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland"},{"name":"Tampere University Hospital"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"179","published-online":{"date-parts":[[2026,8,28]]},"reference":[{"key":"e_1_3_3_2_2","doi-asserted-by":"publisher","DOI":"10.1016\/S1474-4422(15)00042-3"},{"key":"e_1_3_3_3_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.yebeh.2023.109257"},{"key":"e_1_3_3_4_2","doi-asserted-by":"publisher","DOI":"10.1177\/15500594231183554"},{"key":"e_1_3_3_5_2","doi-asserted-by":"publisher","DOI":"10.1097\/MEJ.0b013e32835caebf"},{"key":"e_1_3_3_6_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.eplepsyres.2023.107218"},{"key":"e_1_3_3_7_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.yebeh.2010.06.016"},{"key":"e_1_3_3_8_2","doi-asserted-by":"publisher","DOI":"10.1111\/epi.16519"},{"key":"e_1_3_3_9_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.clinph.2018.01.019"},{"key":"e_1_3_3_10_2","doi-asserted-by":"publisher","DOI":"10.1097\/WNP.0000000000000957"},{"key":"e_1_3_3_11_2","doi-asserted-by":"publisher","DOI":"10.1097\/WNP.0000000000000800"},{"key":"e_1_3_3_12_2","doi-asserted-by":"publisher","DOI":"10.1007\/s11910-022-01243-1"},{"key":"e_1_3_3_13_2","doi-asserted-by":"publisher","DOI":"10.1111\/epi.13121"},{"key":"e_1_3_3_14_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.eplepsyres.2025.107507"},{"key":"e_1_3_3_15_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.clinph.2016.08.013"},{"key":"e_1_3_3_16_2","doi-asserted-by":"publisher","DOI":"10.1371\/journal.pone.0310223"},{"key":"e_1_3_3_17_2","doi-asserted-by":"publisher","DOI":"10.1111\/epi.14607"},{"key":"e_1_3_3_18_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.eplepsyres.2018.03.012"},{"key":"e_1_3_3_19_2","doi-asserted-by":"publisher","DOI":"10.1111\/aas.13466"},{"key":"e_1_3_3_20_2","doi-asserted-by":"publisher","DOI":"10.1001\/jamaneurol.2023.1645"},{"key":"e_1_3_3_21_2","doi-asserted-by":"publisher","DOI":"10.1016\/S0140-6736(20)30611-5"},{"key":"e_1_3_3_22_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.seizure.2019.01.015"},{"key":"e_1_3_3_23_2","doi-asserted-by":"publisher","DOI":"10.1111\/epi.13716"},{"key":"e_1_3_3_24_2","doi-asserted-by":"publisher","DOI":"10.1136\/emj.2011.112888"},{"key":"e_1_3_3_25_2","doi-asserted-by":"publisher","DOI":"10.1007\/s12028-024-02039-6"}],"container-title":["Clinical 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