Seizure Management

Pharmacological Interventions

For refractory cases, pentobarbital is associated with fewer treatment failures (8%) compared to propofol (27%) and midazolam (20%), as recommended by the American College of Emergency Physicians 1
The American Academy of Pediatrics recommends a midazolam infusion with a loading dose of 0.15-0.20 mg/kg, followed by a continuous infusion starting at 1 mg/kg per min, increasing by 1 mg/kg per min every 15 min until seizures stop 2
The American Academy of Pediatrics suggests a propofol infusion with a loading dose of 50-75 mg/kg over 10-60 min, followed by an infusion of 0.50-0.75 mg/kg per min 2

The following medications are recommended for status epilepticus treatment, with their respective doses, success rates, and key adverse effects:

Medication	Dose	Success Rate	Key Adverse Effects
Lorazepam	0.05 mg/kg IV (max 4 mg)	65%	Respiratory depression
Valproate	20-30 mg/kg IV	88%	GI disturbances, tremor
Levetiracetam	30-50 mg/kg IV	44-73%	Minimal adverse effects
Phenytoin	18-20 mg/kg IV	56%	Hypotension, cardiac dysrhythmias, purple glove syndrome
Phenobarbital	10-20 mg/kg IV	58%	Respiratory depression, hypotension	[1, 3]

Maintenance doses of lorazepam, levetiracetam, and phenobarbital can be administered as follows: lorazepam 0.05 mg/kg (maximum 1 mg) IV every 8 hours for 3 doses, levetiracetam 15 mg/kg (maximum 1,500 mg) IV every 12 hours, and phenobarbital 1-3 mg/kg IV every 12 hours (if used) 3
Fosphenytoin may be considered as an alternative to phenytoin due to its better safety profile, with fewer local and systemic effects, as suggested by the American College of Emergency Physicians 4
The American College of Physicians recommends lamotrigine as a first-line alternative treatment for epilepsy due to its good efficacy and minimal cognitive adverse effects, while avoiding phenytoin, phenobarbital, and carbamazepine as first-line agents due to their adverse effect profile and drug interactions 5
For patients already on levetiracetam 500 mg Q12 who continue to experience brief seizure episodes, either valproate or fosphenytoin should be added as a second-line agent, as both have similar efficacy for seizure control 6
The efficacy of valproate or fosphenytoin as second-line agents is approximately 46% success rate in benzodiazepine-refractory status epilepticus 6
The Established Status Epilepticus Treatment Trial (ESETT) found similar efficacy (approximately 45-47%) for levetiracetam, fosphenytoin, and valproate in status epilepticus 6

Respiratory monitoring is crucial, as there is an increased incidence of apnea when midazolam is combined with other sedative agents, and oxygen saturation should be monitored continuously 2
Hemodynamic monitoring is necessary, as propofol may cause hypotension, ventricular arrhythmias, and angina, and blood pressure and ECG should be monitored continuously 2
Hemodynamic monitoring is fundamental due to the high risk of hypotension (77% of cases), and continuous cardiorespiratory monitoring and frequent neurological assessments are necessary for patients with seizures 4, 7
Laboratory monitoring, including baseline renal and hepatic function, periodic electrolytes, and drug levels when appropriate, is crucial for optimal patient care, according to the American Academy of Neurology 8

High-risk populations for non-convulsive status epilepticus (NCSE) include elderly patients, particularly those on psychotropic medications, ICU patients, post-convulsive seizure patients, and patients with encephalopathy, with outcomes worse when NCSE is caused by toxic/metabolic derangements or anoxia 4, 9
Specific patient populations, including those with cardiac conditions, liver disease, women of childbearing potential, and patients with renal impairment, require tailored treatment approaches, as recommended by the American Academy of Neurology, the American Heart Association, and the American Association for the Study of Liver Diseases 8, 1, 5, 10, 11

The American Heart Association recommends not restraining the person, not putting anything in the mouth, and not giving food, liquids, or oral medicines during a seizure or when responsiveness is decreased 12
The American Heart Association recommends helping the person to the ground, placing them on their side in recovery position, clearing the area around them, and staying with the person having a seizure 12
EMS activation is recommended for seizures lasting >5 minutes, multiple seizures without return to baseline, seizures occurring in water, seizures with traumatic injuries or difficulty breathing, seizure in an infant <6 months of age, seizure in pregnant individuals, or if the person doesn't return to baseline within 5-10 minutes after seizure activity stops, as suggested by the American Heart Association 12

Magnesium can be used as an adjunctive treatment during seizure management, particularly during the maintenance phase of targeted temperature management, but not as a standalone antiseizure agent, as suggested by the European Heart Journal 13
Oral glucocorticoid steroids are recommended for patients with perilesional vasogenic edema, with starting dosages between 4-8 mg/day of dexamethasone, and tapering the steroid dose as quickly as the clinical situation allows to avoid long-term toxicity 14

Regular follow-up every 3-6 months is recommended to assess seizure control, medication tolerability, and potential side effects, including cognitive effects, as suggested by the American Academy of Neurology and the American College of Emergency Physicians 1, 6, 15, 5