Guillain-Barré Syndrome

A 32-year-old man from rural India presents with progressive weakness of lower limbs for 3 days, now involving upper limbs and facial muscles. He reports a diarrheal illness 2 weeks ago. On examination, he has areflexia, intact sensation, and mild respiratory effort dyspnea. Vital capacity is 65% of predicted. What is the most appropriate immediate next step in management?

A 28-year-old woman with confirmed GBS (positive anti-GQ1b antibodies, demyelinating features on NCS) is 5 days into illness with moderate weakness of all four limbs and intact respiratory function (vital capacity 85% predicted). She is hemodynamically stable. Which is the most appropriate next step in management?

A 32-year-old man from rural Maharashtra presents with rapidly progressive ascending paralysis and areflexia over 5 days following an upper respiratory infection. CSF analysis shows protein 120 mg/dL with normal cell count. Which single feature best distinguishes Guillain-Barré Syndrome from acute transverse myelitis in this clinical context?

A 28-year-old woman with Guillain-Barré Syndrome is compared with a patient with chronic inflammatory demyelinating polyneuropathy (CIDP). Which feature most reliably distinguishes GBS from CIDP?

What is the characteristic cerebrospinal fluid (CSF) finding in Guillain-Barré Syndrome?