PMID- 33272894 OWN - NLM STAT- MEDLINE DCOM- 20210419 LR - 20210419 IS - 1525-5069 (Electronic) IS - 1525-5050 (Linking) VI - 114 IP - Pt A DP - 2021 Jan TI - Electroclinical patterns in patients with nonconvulsive status epilepticus: Etiology, treatment, and outcome. PG - 107611 LID - S1525-5050(20)30791-5 [pii] LID - 10.1016/j.yebeh.2020.107611 [doi] AB - INTRODUCTION: This study investigated the clinical and electroencephalography (EEG) features and prognostic factors of patients with nonconvulsive status epilepticus (NCSE). MATERIALS AND METHODS: We retrospectively reviewed the clinical files and EEG data of 45 (28 females, mean age 54 +/- 22.6 years) consecutive patients with NCSE over a five-year period. An EEG interpreter who was blinded to the clinical findings evaluated the EEGs according to the Salzburg Consensus Criteria (SCC) for NCSE. Patient demographics, etiology, neuroimaging and laboratory data, EEG features, treatment, and outcome measures were analyzed. RESULTS: The most common etiology for NCSE was acute symptomatic etiologies (57.8%) and cerebrovascular disease (48.9%). The majority (68.9%) of the patients presented with new-onset status epilepticus (SE). NCSE was refractory to treatment in 31.1% of patients. The most common status pattern consisted of rhythmic delta/theta activity in 62.3% of EEGs. Twenty-five status patterns on the EEGs were classified as definite, 30 as possible, and six as no NCSE according to the SCC. The in-hospital mortality rate was high (33.3%) showing an association with potentially fatal etiology, refractory SE, treatment with continuous I.V. anesthetics and also the presence of multiple status patterns and nonreactivity in EEGs (p < 0.05). CONCLUSIONS: The SCC for NCSE have high diagnostic accuracy but do not affect prognosis. Potentially fatal etiology, multiple status patterns on EEG and non-reactive EEGs may carry significantly greater risk for short-term mortality. CI - Copyright (c) 2020 Elsevier Inc. All rights reserved. FAU - Baysal-Kirac, Leyla AU - Baysal-Kirac L AD - Trakya University Hospital, Neurology and Clinical Neurophysiology Department, 22030 Balkan Yerleskesi, Edirne, Turkey. Electronic address: baysalleyla@gmail.com. FAU - Cakar, Merve Melodi AU - Cakar MM AD - Trakya University Hospital, Neurology and Clinical Neurophysiology Department, 22030 Balkan Yerleskesi, Edirne, Turkey. FAU - Altiokka-Uzun, Gunes AU - Altiokka-Uzun G AD - Trakya University Hospital, Neurology and Clinical Neurophysiology Department, 22030 Balkan Yerleskesi, Edirne, Turkey. FAU - Guncan, Zuhal AU - Guncan Z AD - Trakya University Hospital, Neurology and Clinical Neurophysiology Department, 22030 Balkan Yerleskesi, Edirne, Turkey. FAU - Guldiken, Baburhan AU - Guldiken B AD - Trakya University Hospital, Neurology and Clinical Neurophysiology Department, 22030 Balkan Yerleskesi, Edirne, Turkey. LA - eng PT - Journal Article DEP - 20201201 PL - United States TA - Epilepsy Behav JT - Epilepsy & behavior : E&B JID - 100892858 SB - IM MH - Adult MH - Aged MH - *Cerebrovascular Disorders MH - Electroencephalography MH - Female MH - Humans MH - Middle Aged MH - Prognosis MH - Retrospective Studies MH - *Status Epilepticus/diagnosis/epidemiology/etiology OTO - NOTNLM OT - EEG OT - Epilepsy OT - Nonconvulsive status epilepticus OT - Salzburg Consensus Criteria COIS- Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper. EDAT- 2020/12/05 06:00 MHDA- 2021/04/20 06:00 CRDT- 2020/12/04 05:37 PHST- 2020/08/30 00:00 [received] PHST- 2020/10/27 00:00 [revised] PHST- 2020/10/28 00:00 [accepted] PHST- 2020/12/05 06:00 [pubmed] PHST- 2021/04/20 06:00 [medline] PHST- 2020/12/04 05:37 [entrez] AID - S1525-5050(20)30791-5 [pii] AID - 10.1016/j.yebeh.2020.107611 [doi] PST - ppublish SO - Epilepsy Behav. 2021 Jan;114(Pt A):107611. doi: 10.1016/j.yebeh.2020.107611. Epub 2020 Dec 1.