Paediatricsniche
A 4-year-old girl with Dravet syndrome is brought in by ambulance with a generalised convulsion that started 20 minutes ago. Her parents gave buccal midazolam at home and the paramedics gave a further dose of intravenous midazolam en route. She is still convulsing, her airway is being supported with oxygen and the intravenous cannula is patent. Her blood glucose is 5.4 mmol/L and she is afebrile. Which one of the following should be given next?