Which drug is NOT typically used for status epilepticus?

Ethosuximide is not typically used for status epilepticus because its primary indication is for absence seizures, particularly in the context of generalized tonic-clonic seizures or other types of seizures that can occur in status epilepticus. Ethosuximide works by inhibiting certain calcium channels, which is particularly effective in controlling absence seizure pathways but does not address the urgent medical needs presented in status epilepticus.

In contrast, medications such as diazepam, phenytoin, and lorazepam are commonly utilized in emergency settings to manage status epilepticus. Diazepam and lorazepam are benzodiazepines that act quickly to provide sedation and anticonvulsant effects, making them suitable for immediate intervention. Phenytoin, which is a hydantoin anticonvulsant, is often used for longer-term management following acute treatment.

Therefore, ethosuximide's mechanism of action and specific seizure type treatment make it inappropriate for the urgent management required in status epilepticus.