Question

A 33-year-old woman presents with sudden severe headache described as the worst of her life, associated with photophobia and neck stiffness. CT brain is normal at 4 hours after onset. What is the most appropriate next investigation to exclude subarachnoid haemorrhage?

Accepted Answer

Lumbar puncture looking for xanthochromia

Answer

No further investigation is required

Answer

MRI brain

Answer

Carotid Doppler ultrasound

Answer

EEG

Practice question

A 33-year-old woman presents with sudden severe headache described as the worst of her life, associated with photophobia and neck stiffness. CT brain is normal at 4 hours after onset. What is the most appropriate next investigation to exclude subarachnoid haemorrhage?