Aidan Neligan1,2,3, Alastair John Noyce2,3, Tushar Divakar Gosavi4,5, Simon D Shorvon2, Sebastian Köhler6, Matthew C Walker2. 1. Homerton University Hospital NHS Foundation Trust, Homerton Row, London, England. 2. University College London Queen Square Institute of Neurology, Queen Square, London, England. 3. Preventive Neurology Unit, Wolfson Institute of Preventative Medicine, Queen Mary University of London, London, England. 4. National Neuroscience Institute, Singapore. 5. Singapore General Hospital, Singapore. 6. Maastricht University Medical Centre, School for Mental Health and Neuroscience, Alzheimer Centre Limburg, Maastricht, the Netherlands.
Abstract
IMPORTANCE: Status epilepticus (SE) is associated with significant morbidity and mortality. Since the late 1990s, a more aggressive management of prolonged convulsive seizures lasting longer than 5 minutes has been advocated. OBJECTIVE: To determine if convulsive SE mortality has decreased during a time of increasing advocacy for out-of-hospital treatment and escalating and earlier treatment protocols for prolonged seizures and SE. DATA SOURCE: This systemic review and meta-analysis on studies focused on the mortality of convulsive status epilepticus was conducted by searching MEDLINE, Embase, PsychINFO, CINAHL Plus, and the Cochrane Database of Systematic Reviews between January 1, 1990, and June 30, 2017. STUDY SELECTION: Studies were excluded if they had fewer than 30 participants (<20 for refractory SE), were limited to SE of single specific etiology or an evaluation of a single treatment modality, or were studies of nonconvulsive SE. DATA EXTRACTION AND SYNTHESIS: Data were abstracted and their quality was assessed via a modified Newcastle-Ottawa scale independently by 2 reviewers (A.N. and T.D.G.) using the Meta-analyses of Observational Studies in Epidemiology (MOOSE) guidelines. Data were pooled using a random-effects model. MAIN OUTCOMES AND MEASURES: The main outcome measure was in-hospital mortality or 30-day case fatality expressed as proportional mortality. RESULTS: Sixty-one studies were included in the analysis. The pooled mortality ratios were 15.9% (95% CI, 12.7-19.2) for adult studies, 13.0% (95% CI, 7.2-19.0) for all-age population studies, 3.6% (95% CI, 2.0%-5.2%) for pediatric studies, and 17.3% (95% CI, 9.8-24.7) for refractory SE studies, with very high between-study heterogeneity. We found no evidence of a change in prognosis over time nor by the definition of SE used. CONCLUSIONS AND RELEVANCE: The mortality of convulsive SE is higher in adults than in children and there was no evidence for improved survival over time. Although there are many explanations for these findings, they can be explained by aetiology of SE being the major determinant of mortality. However, there are potential confounders, including differences in case ascertainment and study heterogeneity. This meta-analysis highlights the need for strict international guidelines for the study of this condition.
IMPORTANCE: Status epilepticus (SE) is associated with significant morbidity and mortality. Since the late 1990s, a more aggressive management of prolonged convulsive seizures lasting longer than 5 minutes has been advocated. OBJECTIVE: To determine if convulsive SE mortality has decreased during a time of increasing advocacy for out-of-hospital treatment and escalating and earlier treatment protocols for prolonged seizures and SE. DATA SOURCE: This systemic review and meta-analysis on studies focused on the mortality of convulsive status epilepticus was conducted by searching MEDLINE, Embase, PsychINFO, CINAHL Plus, and the Cochrane Database of Systematic Reviews between January 1, 1990, and June 30, 2017. STUDY SELECTION: Studies were excluded if they had fewer than 30 participants (<20 for refractory SE), were limited to SE of single specific etiology or an evaluation of a single treatment modality, or were studies of nonconvulsive SE. DATA EXTRACTION AND SYNTHESIS: Data were abstracted and their quality was assessed via a modified Newcastle-Ottawa scale independently by 2 reviewers (A.N. and T.D.G.) using the Meta-analyses of Observational Studies in Epidemiology (MOOSE) guidelines. Data were pooled using a random-effects model. MAIN OUTCOMES AND MEASURES: The main outcome measure was in-hospital mortality or 30-day case fatality expressed as proportional mortality. RESULTS: Sixty-one studies were included in the analysis. The pooled mortality ratios were 15.9% (95% CI, 12.7-19.2) for adult studies, 13.0% (95% CI, 7.2-19.0) for all-age population studies, 3.6% (95% CI, 2.0%-5.2%) for pediatric studies, and 17.3% (95% CI, 9.8-24.7) for refractory SE studies, with very high between-study heterogeneity. We found no evidence of a change in prognosis over time nor by the definition of SE used. CONCLUSIONS AND RELEVANCE: The mortality of convulsive SE is higher in adults than in children and there was no evidence for improved survival over time. Although there are many explanations for these findings, they can be explained by aetiology of SE being the major determinant of mortality. However, there are potential confounders, including differences in case ascertainment and study heterogeneity. This meta-analysis highlights the need for strict international guidelines for the study of this condition.
Authors: Michael C Jin; Jonathon J Parker; Michael Zhang; Zack A Medress; Casey H Halpern; Gordon Li; John K Ratliff; Gerald A Grant; Robert S Fisher; Stephen Skirboll Journal: J Neurosurg Date: 2021-05-14 Impact factor: 5.115
Authors: Judith L Z Weisenberg; Robert T Fitzgerald; John N Constantino; Melodie R Winawer; Liu Lin Thio Journal: Neurology Date: 2020-09-11 Impact factor: 9.910
Authors: Marina Gaínza-Lein; Cristina Barcia Aguilar; Juan Piantino; Kevin E Chapman; Iván Sánchez Fernández; Marta Amengual-Gual; Anne Anderson; Brian Appavu; Ravindra Arya; James Nicholas Brenton; Jessica L Carpenter; Justice Clark; Raquel Farias-Moeller; William D Gaillard; Tracy A Glauser; Joshua L Goldstein; Howard P Goodkin; Linda Huh; Robert Kahoud; Kush Kapur; Yi-Chen Lai; Tiffani L McDonough; Mohamad A Mikati; Lindsey A Morgan; Anuranjita Nayak; Edward Novotny; Adam P Ostendorf; Eric T Payne; Katrina Peariso; Latania Reece; James Riviello; Kumar Sannagowdara; Tristan T Sands; Theodore Sheehan; Robert C Tasker; Dmitry Tchapyjnikov; Alejandra Vasquez; Mark S Wainwright; Angus Wilfong; Korwyn Williams; Bo Zhang; Tobias Loddenkemper Journal: Epilepsia Date: 2021-07-12 Impact factor: 6.740