A 29-year-old man presents with progressive ascending weakness over 3 days following a diarrhoeal illness 2 weeks ago. Reflexes are absent in all limb...

Question

A 29-year-old man presents with progressive ascending weakness over 3 days following a diarrhoeal illness 2 weeks ago. Reflexes are absent in all limbs and there is mild facial weakness. What is the most appropriate next investigation?

Accepted Answer

Nerve conduction studies and urgent admission for monitoring

Answer

MRI spine with contrast only

Answer

Lumbar puncture in the community

Answer

Outpatient neurology review in 4 weeks

Answer

Start high-dose oral steroids without investigation

uk-plab-1 MCQ (SBA): Guillain–Barré syndrome

A 29-year-old man presents with progressive ascending weakness over 3 days following a diarrhoeal illness 2 weeks ago. Reflexes are absent in all limbs and there is mild facial weakness. What is the most appropriate next investigation?