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- Title
Association of Mortality and Risk of Epilepsy With Type of Acute Symptomatic Seizure After Ischemic Stroke and an Updated Prognostic Model.
- Authors
Sinka, Lucia; Abraira, Laura; Imbach, Lukas L.; Zieglgänsberger, Dominik; Santamarina, Estevo; Álvarez-Sabín, José; Ferreira-Atuesta, Carolina; Katan, Mira; Scherrer, Natalie; Bicciato, Giulio; Terziev, Robert; Simmen, Cyril; Schubert, Kai Michael; Elshahabi, Adham; Baumann, Christian R.; Döhler, Nico; Erdélyi-Canavese, Barbara; Felbecker, Ansgar; Siebel, Philip; Winklehner, Michael
- Abstract
This cohort study examines data for patients with acute ischemic stroke to compare the risk of poststroke mortality and epilepsy between different types of acute symptomatic seizures. Key Points: Question: Do mortality and the risk of poststroke epilepsy differ between different types of acute symptomatic seizures occurring within 7 days after ischemic stroke? Findings: This cohort study included 4591 adults with acute ischemic stroke. Acute symptomatic seizures presenting as status epilepticus had a higher 10-year mortality (≥76%) and risk of poststroke epilepsy in stroke survivors (≥81%) compared with short seizures (30% and 40%, respectively) and individuals without acute symptomatic seizures (11% and 13%, respectively). Meaning: This study found that acute symptomatic status epilepticus was associated with an increased risk of mortality and epilepsy following ischemic stroke. Importance: Acute symptomatic seizures occurring within 7 days after ischemic stroke may be associated with an increased mortality and risk of epilepsy. It is unknown whether the type of acute symptomatic seizure influences this risk. Objective: To compare mortality and risk of epilepsy following different types of acute symptomatic seizures. Design, Setting, and Participants: This cohort study analyzed data acquired from 2002 to 2019 from 9 tertiary referral centers. The derivation cohort included adults from 7 cohorts and 2 case-control studies with neuroimaging-confirmed ischemic stroke and without a history of seizures. Replication in 3 separate cohorts included adults with acute symptomatic status epilepticus after neuroimaging-confirmed ischemic stroke. The final data analysis was performed in July 2022. Exposures: Type of acute symptomatic seizure. Main Outcomes and Measures: All-cause mortality and epilepsy (at least 1 unprovoked seizure presenting >7 days after stroke). Results: A total of 4552 adults were included in the derivation cohort (2547 male participants [56%]; 2005 female [44%]; median age, 73 years [IQR, 62-81]). Acute symptomatic seizures occurred in 226 individuals (5%), of whom 8 (0.2%) presented with status epilepticus. In patients with acute symptomatic status epilepticus, 10-year mortality was 79% compared with 30% in those with short acute symptomatic seizures and 11% in those without seizures. The 10-year risk of epilepsy in stroke survivors with acute symptomatic status epilepticus was 81%, compared with 40% in survivors with short acute symptomatic seizures and 13% in survivors without seizures. In a replication cohort of 39 individuals with acute symptomatic status epilepticus after ischemic stroke (24 female; median age, 78 years), the 10-year risk of mortality and epilepsy was 76% and 88%, respectively. We updated a previously described prognostic model (SeLECT 2.0) with the type of acute symptomatic seizures as a covariate. SeLECT 2.0 successfully captured cases at high risk of poststroke epilepsy. Conclusions and Relevance: In this study, individuals with stroke and acute symptomatic seizures presenting as status epilepticus had a higher mortality and risk of epilepsy compared with those with short acute symptomatic seizures or no seizures. The SeLECT 2.0 prognostic model adequately reflected the risk of epilepsy in high-risk cases and may inform decisions on the continuation of antiseizure medication treatment and the methods and frequency of follow-up.
- Publication
JAMA Neurology, 2023, Vol 80, Issue 6, p605
- ISSN
2168-6149
- Publication type
Article
- DOI
10.1001/jamaneurol.2023.0611