Preventing Seizure due to Head Trauma in Patients Visiting Emergency Department
Journal Title: مجله طب اورژانس ایران - Year 2018, Vol 5, Issue 1
Abstract
Head trauma is a known cause of seizure and about 10% of patients with severe or moderate head trauma are affected with seizure. Preventing and controlling seizure after head trauma is of great importance for minimizing secondary brain injuries. Depending on their time of occurrence, post-trauma seizures are divided into 3 types, namely immediate seizures, early seizures, and late seizures. Immediate seizures occur within less than 24 hours after the trauma, while early seizures happen in less than a week and late seizures happen more than a week after trauma. Phenytoin is an antiepileptic drug that is widely prescribed for preventing seizure in trauma patients. This drug has nonlinear pharmacokinetics even in therapeutic dos es and its prescription requires cardiac monitoring, continuous monitoring of the drug’s plasma levels and dose adjustment. Studies have shown that phenytoin prevents early seizures but is not effective in decreasing late seizures. On the other hand, in most cases, due to pharmacokinetic changes in patients with head trauma, blood concentration of phenytoin is outside the therapeutic range and determining its serum levels cannot always be done.
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