Guillain-Barré Syndrome (GBS): From Acute Paralysis to Functional Recovery

Guillain-Barré Syndrome (GBS) is an acute, autoimmune disorder attacking the peripheral nervous system (LMN lesion). It typically presents as rapid, symmetrical ascending paralysis (from toes to nose). Physiotherapy management is delicate; unlike stroke, pushing a GBS patient too hard too soon can cause permanent damage ("Overwork Weakness"). This guide covers the phases of recovery and safe rehab protocols.

1. Clinical Presentation & "The Rule of Ascending"

• Motor: Symmetrical flaccid paralysis starting in feet/legs and moving up to trunk, arms, and face.
• Sensory: "Glove and stocking" paresthesia (tingling/numbness) and often severe neuropathic pain.
• Reflexes: Areflexia (Absent deep tendon reflexes) - a hallmark LMN sign.
• Autonomic: Fluctuating BP, tachycardia, arrhythmias (Dysautonomia).
• Respiratory: 20-30% of patients require mechanical ventilation due to diaphragm weakness.

Clinical Pearl: While Stroke is often hemiplegia (one side), GBS is typically quadriplegia (all four limbs) and is symmetrical.

2. The 3 Phases of GBS Rehab

Treatment MUST match the phase of the disease. What is good in the recovery phase can be harmful in the acute phase.

Phase	Timeline (Approx)	Physio Goal
1. Acute Phase (Deterioration)	Onset to Peak (up to 4 weeks)	Supportive: Respiratory care, prevent contractures/sores, pain management. NO Active Strengthening.
2. Plateau Phase (Stable)	Symptoms stabilize (weeks to months)	Maintenance: Upright tolerance, gentle active-assisted ROM, monitor fatigue.
3. Recovery Phase (Remyelination)	Slow improvement (months to years)	Rehabilitation: Strengthening, functional mobility, gait training.

3. Acute Phase: "Prevention & Protection"

• Respiratory Care: Deep breathing exercises (if off vent), chest percussion/vibrations to clear secretions. Monitor Vital Capacity.
• Positioning: Splinting ankles at 90° (prevent foot drop). Frequent turning (prevent bed sores).
• PROM: Gentle Passive Range of Motion to maintain joint flexibility.
• Pain: Desensitization (using different textures) for hypersensitivity; TENS may help.

4. Recovery Phase: "Strengthening with Caution"

CRITICAL WARNING: Overwork Weakness
In GBS, exercising a denervated muscle to fatigue can cause permanent damage (fibrosis).
Rule: Exercise should be non-fatiguing. If muscle soreness lasts >12-24 hours, the intensity was too high. Avoid heavy eccentric loads initially.

Safe Exercise Progression:

1. Isometric Exercises: Gentle muscle setting without joint movement.
2. Active-Assisted (AAROM): Patient moves, therapist assists/supports the weight.
3. Active Against Gravity: Only once muscle has 3/5 strength (Anti-gravity).
4. Low-Resistance Functional: Sit-to-stand, bed mobility.
5. Hydrotherapy: Excellent for unweighting limbs and allowing movement without fatigue.

5. Revision Notes for Students

Pathology: LMN lesion (demyelination of peripheral nerves).
Pattern: Symmetrical, Ascending (Legs → Arms → Face).
Red Flag: Respiratory Failure (diaphragm paralysis).
Golden Rule: Avoid "Overwork Weakness". Low reps, frequent rest, sub-maximal load.
Prognosis: Most recover, but it takes time (descending recovery: "Last to go, first to come back").

6. FAQs

Q1. Why do we avoid eccentric exercises early on?

Eccentric contractions (lengthening under load) place the highest stress on muscle fibers. In recovering motor units, this can cause micro-trauma that the body cannot repair, leading to loss of function.

Q2. How long does recovery take?

Recovery is slow because axons regenerate at approx. 1mm/day. Significant recovery often occurs in the first year, but some deficits may persist for 2-3 years.

Q3. What is the Miller Fisher Variant?

A specific triad of GBS: Ataxia (balance), Ophthalmoplegia (eye paralysis), and Areflexia. It usually descends (starts at eyes/head).

7. 10 Practice MCQs

Q1. GBS is classically characterized by which type of paralysis?

Answer: B) It starts in the feet and moves upwards symmetrically.

Q2. Which sign confirms an LMN lesion in GBS?

Answer: C) The reflex arc is broken due to peripheral nerve demyelination.

Q3. "Overwork Weakness" refers to:

Answer: B) This is a specific risk in GBS, Polio, and other LMN disorders.

Q4. During the Acute Phase (deterioration), the primary PT goal is:

Answer: B) While the patient is getting worse, we support vital functions and protect joints.

Q5. Which exercise is safest to start with in the early recovery phase?

Answer: C) These reduce gravity/load and allow movement without fatigue.

Q6. Sensory loss in GBS typically follows which pattern?

Answer: B) Affecting the distal extremities first (longest nerves).

Q7. Dysautonomia in GBS can manifest as:

Answer: B) The autonomic nervous system is often involved, making vital sign monitoring crucial.

Q8. Strengthening against gravity (e.g., straight leg raise) should only begin when muscle grade is:

Answer: C) Grade 3 is defined as full ROM against gravity.

Q9. If a patient complains of severe pain when the bed sheet touches their legs, this is:

Answer: B) Pain from a non-painful stimulus, common in nerve recovery.

Q10. The Miller Fisher variant triad includes:

Answer: B) A unique descending variant affecting eyes and balance first.

References

• Khan, F., et al. (2011). Rehabilitation outcomes in patients with Guillain-Barré syndrome. Aust Health Rev.
• O’Sullivan, S. B., & Schmitz, T. J. (2019). Physical Rehabilitation. F.A. Davis.
• Bassetti, C. L., et al. (2013). European Handbook of Neurological Management: Volume 2. Wiley-Blackwell.