Neuro: Guillain-Barre Syndrome: Free MSRA Podcast

⚡ FREE MSRA PODCAST – Guillain-Barré Syndrome (GBS): Ascending Weakness, Rapid Recovery?🎧 Your rapid-fire, high-yield guide to GBS—covering everything from triggers and clinical pearls to exam pitfalls and management essentials.🧠 Key Learning Points📌 Definition• Guillain-Barré Syndrome (GBS) = acute, autoimmune, demyelinating polyneuropathy• Characterised by rapid-onset, progressive muscle weakness• Often follows infection (especially Campylobacter jejuni)📌 Causes & Risk Factors• Triggered by infection: – Campylobacter jejuni (most common), CMV, EBV, Mycoplasma, Influenza, HIV, Zika• Also linked to: – Recent surgery or trauma – Rarely: vaccines (notably influenza), Hodgkin lymphoma• More common in males and in post-partum women📌 Pathophysiology• Molecular mimicry: immune system targets nerve myelin due to resemblance to infectious agents• Leads to inflammatory demyelination—nerve signals are slowed/disrupted📌 Variants• AIDP (acute inflammatory demyelinating polyradiculoneuropathy) – classic form• AMAN/AMSAN (motor/sensory axonal forms) – direct axonal damage• Miller-Fisher syndrome: triad of ophthalmoplegia, ataxia, areflexia—linked with anti-GQ1B antibodies (90%)📌 Symptoms• Ascending, symmetrical muscle weakness (starts in legs → arms)• Areflexia (loss of reflexes)• Tingling/paraesthesia in hands & feet• Pain (esp. back/legs, often early)• Facial weakness, swallowing difficulties• Respiratory muscle weakness: can cause respiratory failure• Autonomic dysfunction (arrhythmia, blood pressure swings, sweating)📌 Differential Diagnosis• CIDP (chronic form)• Myasthenia gravis• Botulism• Transverse myelitis• Stroke• Hypokalaemia• Other neuropathies/myopathies📌 Diagnosis• Clinical diagnosis + nerve conduction studies (slowed conduction in demyelinating type; may be normal early!)• CSF: high protein, normal white cells = albuminocytologic dissociation (classic)• Miller-Fisher: check for anti-GQ1B antibodies• FVC <20ml/kg = ICU threshold• MRI (to exclude cord compression if diagnosis unclear)📌 Management• Admit to hospital for monitoring (risk of respiratory failure/autonomic instability)• IVIG or plasma exchange (both effective, IVIG often easier to administer)• DO NOT use corticosteroids (not effective, may delay recovery)• Early DVT prophylaxis (compression stockings, LMWH)• Physiotherapy & occupational therapy—start early• Pain management (gabapentin, pregabalin, opiates if needed)• Close monitoring of FVC and vital signs📌 Complications• Respiratory failure (may need ventilation)• Autonomic instability (arrhythmias, BP swings)• DVT/PE, infections (esp. pneumonia, UTI)• Long-term weakness, chronic pain, contractures• Psychological distress/anxiety📌 Prognosis• 80% walk independently by 6 months• 3–10% mortality (mainly from respiratory failure/PE/sepsis)• Poor prognosis if: older age, rapid onset, severe weakness, need for ventilation, Campylobacter trigger📎 More MSRA Resources for Guillain-Barré Syndrome:📝 Revision Notes: https://www.passthemsra.com/topic/guillain-barre-syndrome-revision-notes/🧠 Flashcards: https://www.passthemsra.com/topic/guillain-barre-syndrome-flashcards/💬 Accordion Q&A: https://www.passthemsra.com/topic/guillain-barre-syndrome-accordion-qa-notes/🚀 Rapid Quiz: https://www.passthemsra.com/topic/guillain-barre-syndrome-rapid-quiz/🎓 Full Neurology Course: https://www.passthemsra.com/courses/neurology-for-the-msra/#GuillainBarreSyndrome #GBS #NeurologyMSRA #MSRARevision #MSRAFlashcards #MSRAQandA #MSRAQuiz #PassTheMSRA #MSRAPodcast #Polyneuropathy #AscendingWeakness #MillerFisher #AcuteNeurology