Abstract

PurposeCurrent guidelines for traumatic brain injury (TBI) recommend antiepileptic drugs (AEDs) for 7 days after injury to decrease posttraumatic seizure risk. Phenytoin decreases seizure risk 73% vs placebo during this time. Levetiracetam (LEV) is an alternative; however, no published data validate comparable efficacy. Our objective was to evaluate seizure incidence 7 days after TBI in patients treated with phenytoin (PHT) vs LEV and to characterize practice of AED selection. MethodsA retrospective observational study was conducted using a Trauma Registry (Collector Trauma Registry; Digital Innovation, Inc, Forrest Hill, Md) to evaluate patients with TBI. Patients with an initial Head/Neck Abbreviated Injury Scale score of 3 or higher and a Glasgow Coma Scale of 8 or less were included. ResultsOf 109 patients, 89 received PHT, and 20, LEV. Two patients experienced posttraumatic seizure, 1 in each group. Sixty-eight patients survived to hospital discharge; 65% received prophylactic AED greater than 7 days. Ninety-eight percent of 81 patients admitted between 2000 and 2007 received PHT, whereas 64% of 28 patients admitted between 2008 and 2010 received LEV. ConclusionOnly 2 patients experienced posttraumatic seizure after receiving AED, indicating low incidence. Most surviving to hospital discharge received AED prophylaxis greater than 7 days despite guideline recommendations. After approval of intravenous LEV, a trend favoring LEV was observed.

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