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Neurology 7 min read Undergraduate & Postgraduate

Status Epilepticus: A Time-Critical Seizure Algorithm

A clear examination sequence for stabilisation, first-line benzodiazepine therapy, second-line antiseizure treatment and cause-finding.

Exam-oriented educational summary · Updated 10 September 2026

Typical exam stem

A patient has a generalised convulsive seizure lasting more than five minutes. What should you do next?

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1. Sixty-second answer plan

1:00

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2. Section checklist

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3. Exam-pearl flashcards

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4. Viva drill

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Question 1 of 30 confident

When does a convulsive seizure become status epilepticus?

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1

Treat prolonged convulsive seizure as an emergency

A generalised convulsive seizure lasting five minutes or recurrent seizures without recovery should be treated as status epilepticus. The longer seizure activity continues, the harder it may become to terminate and the greater the risk of systemic and neurological complications.

2

Immediate sequence

  • Protect the airway, position safely, give oxygen when needed and establish monitoring.
  • Check capillary glucose immediately and treat hypoglycaemia.
  • Give an appropriate benzodiazepine promptly using a route that can be delivered reliably.
  • If seizure activity continues after adequate first-line treatment, move to a second-line intravenous antiseizure medicine according to local protocol.
  • Refractory status requires urgent anaesthetic and critical-care management with EEG support where available.
3

Find the cause in parallel

  • Medication non-adherence or recent withdrawal.
  • Electrolyte disturbance, hypoglycaemia or uraemia.
  • Stroke, CNS infection, head injury or intracranial mass.
  • Alcohol or sedative withdrawal and toxic exposure.
  • Pregnancy-related eclampsia in the appropriate clinical setting.

Guideline source for further reading

This page is an original exam-revision summary. For clinical decisions, use current local protocols and the primary guidance below.

NICE NG217: Epilepsies in children, young people and adults
Educational use: This material is designed for examination revision and does not replace patient-specific clinical judgement, local treatment protocols or specialist advice.