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Status epilepticus
Status epilepticus (SE) is an epileptic seizure of greater than five minutes or more than one seizure within a five-minute period without the person returning to normal between them.〔 Previous definitions used a 30-minute time limit.〔 The seizures can either be of the tonic-clonic type with a regular pattern of contraction and extension of the arms and legs or of types that do not involve contractions such as absence seizures or complex partial seizures. Status epilepticus is a life-threatening medical emergency particularly if treatment is delayed.〔
Status epilepticus may occur in those with a history of epilepsy as well as those with an underlying problem of the brain. These underlying brain problems may include trauma, infections, or strokes among others.〔 Diagnosis often involves checking the blood sugar, imaging of the head, a number of blood tests, and an electroencephalogram. Psychogenic nonepileptic seizures may present similarly. Other conditions that may also appear to be SE include low blood sugar, movement disorders, meningitis, and delirium among others.〔
Benzodiazepines are the preferred initial treatment after which typically phenytoin is given.〔 Possible benzodiazepines include intravenous lorazepam as well as intramuscular injects of midazolam. A number of other medications may be used if these are not effective such as valproic acid, phenobarbital, propofol, or ketamine. Intubation may be required to help maintain the person's airway. Between 10 to 30% of people who have status epilepticus die within 30 days. The underlying cause, the person's age, and the length of the seizure are important factors in the outcome.〔 Status epilepticus occurs in up to 40 per 100,000 people per year.〔 It makes up about 1% of people who visit the emergency department.〔
==Signs and symptoms==
Status epilepticus can be divided into two categories: convulsive and nonconvulsive (NCSE).〔
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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