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  • Title: Can syncope cause convulsive seizures in adults?
    Author: Kelly DM, Costello DJ.
    Journal: Clin Auton Res; 2017 Aug; 27(4):283-287. PubMed ID: 28667576.
    Abstract:
    PURPOSE: Convulsive epileptic seizures triggered by transient cerebral hypoperfusion 'reflex anoxic seizures' are well-described in children but are not commonly recognized in adults. METHODS: We report a case series of 12 adults who presented acutely after generalized tonic-clonic seizures with a clear syncopal phase before the convulsion. We describe the aetiology, semiology and natural history of these events. RESULTS: Four patients (33.3%) had relevant risk factors for development of seizures/active epilepsy. Five patients (41.7%) had recurrent events prior to initial review by an epileptologist, but when anti-syncope measures were instituted there were no seizure recurrences over a median follow-up period of 34.5 (interquartile range 29.3-41.8) months. CONCLUSIONS: Syncope may be an under-recognized trigger for convulsive acute symptomatic seizures. Avoidance of syncope may be more effective than anti-seizure medications in preventing reflex anoxic seizures.
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