Status Epilepticus Management

Immediate Treatment

The American Heart Association recommends immediate administration of intravenous lorazepam 4 mg at 2 mg/min as first-line treatment, followed by a second-line anticonvulsant agent if seizures persist after 5-10 minutes 1
Alternative routes when IV access is unavailable include IM midazolam 0.2 mg/kg or intranasal midazolam 1, 2
Airway equipment should be immediately available before administering any benzodiazepine, as respiratory depression can occur 1

Valproate 20-30 mg/kg IV over 5-20 minutes has an 88% efficacy with 0% hypotension risk, making it a preferred second-line option 1
Levetiracetam 30 mg/kg IV over 5 minutes has a 68-73% efficacy with minimal cardiovascular effects, requiring no cardiac monitoring 1
Fosphenytoin 20 mg PE/kg IV at a maximum rate of 150 PE/min has an 84% efficacy but a 12% hypotension risk, requiring continuous ECG and blood pressure monitoring 1

Midazolam infusion is a first-choice anesthetic agent for refractory status epilepticus, with a loading dose of 0.15-0.20 mg/kg IV and a continuous infusion starting at 1 mg/kg/min 1, 2
Propofol requires mechanical ventilation, with a 2 mg/kg bolus and a 3-7 mg/kg/hour infusion, and has a 73% efficacy with a 42% hypotension risk 1

Simultaneous search for and treatment of reversible causes, including hyponatremia and other electrolyte abnormalities, is crucial 1
Hypoxia should be addressed by maintaining airway and providing oxygen 1
Drug toxicity or withdrawal syndromes should be considered and treated accordingly 3
Ischemic stroke or intracerebral hemorrhage should be evaluated and managed appropriately 4

Continuous vital sign monitoring, particularly respiratory status and blood pressure, is essential 1, 2
Preparation for mechanical ventilation should be made before initiating any anesthetic agent 1
Continuous EEG monitoring is necessary for refractory cases to guide titration and detect non-convulsive seizure activity 1

The American Heart Association recommends activating EMS immediately for first-time seizures, seizures lasting >5 minutes, multiple seizures without return to baseline, seizures in water or with traumatic injuries, and seizures in infants <6 months or pregnant individuals 3, 4