Status Epilepticus
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Direct answer
Status epilepticus is continuous seizure activity for five minutes or longer, or repeated seizures without recovery in between, and it is a neurological emergency in which each delay deepens brain injury. First-line treatment is a benzodiazepine — intravenous lorazepam, or intramuscular midazolam when no line exists — repeated once if seizures continue, followed by a second-line agent such as phenytoin (or fosphenytoin), levetiracetam or sodium valproate, and then anaesthetic infusion and intubation for refractory cases. In India, neurocysticercosis, alcohol withdrawal, stroke and perinatal injury are everyday causes in adults presenting with a first seizure.
What you must remember
- Stabilisation runs parallel with drugs: airway and oxygen, blood glucose checked and corrected immediately (thiamine with glucose in the alcoholic), electrolytes including sodium and calcium, and a bedside search for the cause.
- First line is a benzodiazepine: intravenous lorazepam 0.1 mg per kg (maximum 4 mg per dose), intravenous diazepam, or intramuscular midazolam — repeat once only after five minutes, because stacking doses risks respiratory depression.
- Second line after persisting seizures: phenytoin or fosphenytoin 20 mg per kg intravenously with cardiac monitoring, or levetiracetam or sodium valproate as alternatives — infusion rates and monitoring are the tested details.
- Refractory status after two adequate drug levels demands anaesthetic infusion — midazolam or propofol — with intubation, ventilation and electroencephalographic guidance in intensive care.
- Everyday Indian causes: neurocysticercosis (single enhancing lesion on imaging — albendazole with corticosteroids and time-limited antiepileptics), alcohol withdrawal, tuberculous pathologies, stroke, head injury and metabolic derangements; eclamptic seizures in pregnancy are treated with magnesium sulphate, not conventional antiepileptics alone.
- Non-convulsive status — fluctuating confusion or coma with seizure discharges on electroencephalography — needs the same urgency once suspected, especially in the comatose ICU patient.
- After control: identify and treat the precipitant, start or adjust maintenance antiepileptic therapy, and counsel on driving, swimming and medication adherence before discharge.
Common confusion
Candidates under-dose the benzodiazepine — an inadequate first dose, not drug failure, is the commonest reason seizures continue — and then delay the second-line drug. A second error is treating the movement without the cause: hyponatraemia, hypoglycaemia and alcohol withdrawal are rapidly reversible, and no antiepileptic replaces their correction. Finally, remember that eclampsia answers to magnesium sulphate; reaching for phenytoin first in a convulsing pregnant woman is a classic wrong option.
Exam-focused takeaway
FMGE status epilepticus questions are sequence questions: five minutes defines it, benzodiazepine is first, one repeat only, phenytoin or levetiracetam second, anaesthesia third — with glucose checked at the bedside throughout. Learn the dose anchors (lorazepam 0.1 mg per kg, phenytoin 20 mg per kg) and the Indian cause-list, where a seizure stem ending in "single enhancing lesion on CT" means neurocysticercosis. The eclampsia-magnesium pairing is the most reliably repeated single fact in this topic.
Frequently asked questions
How is status epilepticus defined?
Continuous seizure activity of five minutes or longer, or repeated seizures without regaining consciousness between them.
What is the first-line drug and dose?
A benzodiazepine — intravenous lorazepam 0.1 mg per kg up to 4 mg, or intramuscular midazolam when intravenous access is absent — repeated once after five minutes if needed.
Which drugs are second line?
Phenytoin or fosphenytoin 20 mg per kg intravenously with cardiac monitoring, or levetiracetam or sodium valproate where chosen, after benzodiazepine failure.
How is neurocysticercosis-related seizure managed?
Antiepileptic therapy for the seizure, with albendazole and corticosteroids for the viable or enhancing lesion, and imaging follow-up; therapy duration is guided by lesion resolution.
Which drug treats eclamptic seizures?
Magnesium sulphate, given promptly, with delivery planning — conventional antiepileptics are adjuncts, not the answer, in eclampsia.