skip to main content

Convulsive status epilepticus persisting after two benzodiazepine doses — MRCEM SBA MCQ

Instant feedback + full explanation. One question, done properly.

HardNeurological emergenciesConvulsive status epilepticus persisting after two benzodiazepine dosesMRCEM SBA

A 50-year-old man with established epilepsy develops a continuous generalised tonic–clonic seizure at home at 15:55. Paramedics administer weight-appropriate buccal midazolam at 16:00 and again at 16:07; the convulsions do not stop. At 16:16 he is still convulsing in the emergency department. His individualised emergency plan is unavailable. Airway support, oxygen, monitoring and intravenous access are in place, and capillary glucose is 5.8 mmol/L. There was no preceding injury or fever. What is the most appropriate next treatment and disposition plan?

Educational content. Not a substitute for clinical judgement or local policy.

Reveal the answer and explanation

Correct answer: D — Give intravenous levetiracetam and admit for monitored care.

The uninterrupted convulsion has lasted more than five minutes and is convulsive status epilepticus. Two appropriately spaced, weight-appropriate benzodiazepine doses have failed; the prehospital doses count when deciding the next treatment in hospital. NICE therefore recommends an intravenous second-line antiseizure medicine. Levetiracetam is one of the recommended choices and may be quicker to administer and have fewer adverse effects than the alternatives. Continue resuscitation and monitoring, seek expert guidance, and admit the patient for ongoing care. ([nice.org.uk](https://www.nice.org.uk/guidance/ng217/chapter/7-Treating-status-epilepticus-repeated-or-cluster-seizures-and-prolonged-seizures)) A would repeat the community first-line treatment rather than escalate. B is attractive because intravenous lorazepam is a first-line hospital treatment when access and resuscitation facilities are available, but here it would be a third benzodiazepine dose. C moves prematurely to phenobarbital: NICE places it among expert-guided third-line options after second-line treatment options have been tried. E selects an appropriate medicine but delays time-critical seizure treatment for imaging. CT can be considered if clinical concerns warrant it, but it is not the next intervention while he remains convulsing. ([nice.org.uk](https://www.nice.org.uk/guidance/ng217/chapter/7-Treating-status-epilepticus-repeated-or-cluster-seizures-and-prolonged-seizures))

Reference: NICE NG217, section 7.1: Status epilepticus (30 January 2025) — https://www.nice.org.uk/guidance/ng217/chapter/7-Treating-status-epilepticus-repeated-or-cluster-seizures-and-prolonged-seizures NICE NG217, section 1.3: Neuroimaging (30 January 2025) — https://www.nice.org.uk/guidance/ng217/chapter/diagnosis-and-assessment-of-epilepsy