Abstract

In principle, the use of anticonvulsant drugs does not differ between acute and remote symptomatic seizures, but control of acute symptomatic seizures requires simultaneous treatment of the underlying etiology. Prevention of remote seizures when the risk is known to be high has been the subject of intense efforts at antiepileptogenesis, but the optimal duration of treatment after an injury is not yet known. Appropriate evaluation of a seizure depends on individual circumstances, but findings on examination, laboratory tests (serum electrolytes, magnesium, glucose, assessment of hepatic and renal function), and brain imaging (CT scan or MRI) are necessary to determine the most likely cause. Lumbar puncture is always required when there is suspicion of meningitis or encephalitis. Preferred medications for treatment of acute symptomatic seizures or status epilepticus are those available for intravenous use, such as benzodiazepines, fosphenytoin or phenytoin, valproate, levetiracetam, and phenobarbital. Diazepam is also available as a gel for rectal administration. Seizures that occur in patients with epilepsy because of missed antiepileptic drugs or inadequate serum levels should be treated with additional doses of their regular medications; loading doses can be administered with minimal toxicity in tolerant patients. Surgery is rarely necessary in the acute setting except for intracerebral lesions with rapidly rising intracranial pressure and impending herniation. After seizures are controlled, the provoking condition must also be determined and treated.

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