• F A Zeiler, M Matuszczak, J Teitelbaum, L M Gillman, and C J Kazina.
• Section of Neurosurgery, Dept. of Surgery, University of Manitoba, Winnipeg, Canada. Electronic address: umzeiler@myumanitoba.ca.
• Seizure. 2015 Nov 1; 32: 100-8.

BackgroundOur goal was to perform a systematic review of the literature on the use of intravenous magnesium sulfate (MgSO4) for non-eclamptic status epilepticus (SE) and refractory status epilepticus (RSE).MethodsArticles from MEDLINE, BIOSIS, EMBASE, Global Health, Scopus, Cochrane Library, the International Clinical Trials Registry Platform, clinicaltrials.gov (inception to June 2015), reference lists of relevant articles, and gray literature were searched. The strength of evidence was adjudicated using both the Oxford and GRADE methodology by two independent reviewers.ResultsWe identified 19 original articles. A total of 28 patients were described in these articles with 11 being adult, 9 being pediatric, and 8 of unknown age. Seizure reduction/control with IV MgSO4 occurred in 14 of the 28 patients (50.0%), with 2 (7.1%) and 12 (42.9%) displaying partial and complete responses respectively. Seizures recurred upon withdrawal of MgSO4 therapy in 50% of the patients whom had reduction/control of their SE/RSE. Three patients had recorded adverse events related to MgSO4 therapy.ConclusionsOxford level 4, GRADE D evidence exists to suggest a trend towards improved seizure control with the use of intravenous MgSO4 for non-eclamptic RSE. Routine use of IV MgSO4 in non-eclamptic SE/RSE cannot be recommended at this time. Further prospective study of this drug is required in order to determine its efficacy as an anti-epileptic in this setting.Copyright © 2015 British Epilepsy Association. Published by Elsevier Ltd. All rights reserved.

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