Management of Suspected Guillain-Barré Syndrome

Clinical Assessment and Diagnosis

The patient's presentation strongly suggests Guillain-Barré Syndrome (GBS) with characteristic features of recent viral illness, progressive ascending weakness, reduced deep tendon reflexes, and neck and back pain 2, 1, 3
Recent viral illness (2 weeks prior) is a common precursor to GBS 2
Progressive ascending weakness (feet to knees to hips) is a hallmark of GBS 1
Reduced deep tendon reflexes (Achilles and patellar) are often observed in GBS patients 2

Vital capacity measurement is essential as respiratory failure is a life-threatening complication of GBS that requires immediate intervention 1, 2
The "20/30/40 rule" should be applied: patient is at risk of respiratory failure if vital capacity <20 ml/kg, maximum inspiratory pressure <30 cmH₂O, or maximum expiratory pressure <40 cmH₂O 4, 5
Regular monitoring of respiratory function is crucial as up to 22% of GBS patients require mechanical ventilation within the first week of admission 2
Use of accessory respiratory muscles should be assessed 1
Single breath count (≤19 predicts need for mechanical ventilation) should be performed 4
Arterial blood gas measurements should be taken if respiratory compromise is suspected 2

Patients should be admitted to the ICU for evolving respiratory distress with imminent respiratory insufficiency, severe autonomic cardiovascular dysfunction, severe swallowing dysfunction or diminished cough reflex, or rapid progression of weakness 2

Intravenous immunoglobulin (IVIg) at 0.4 g/kg body weight daily for 5 days is the first-line treatment for GBS 2, 5
Plasma exchange (200-250 ml plasma/kg body weight in five sessions) is an equally effective alternative 2, 5
Treatment should be initiated as early as possible in the disease course 5
Corticosteroids alone are not recommended for GBS treatment as they have shown no significant benefit and may even have negative effects 2, 3

Regular assessment of muscle strength in neck, arms, and legs using the Medical Research Council grading scale should be performed 4
Functional disability assessment using the GBS disability scale should be done 4
Monitoring for swallowing and coughing difficulties to prevent aspiration is crucial 4, 6
Assessment of autonomic dysfunction via ECG, heart rate, blood pressure, and bowel/bladder function should be performed 4

Cardiovascular and respiratory dysfunction (cause up to two-thirds of deaths in GBS) should be monitored 4, 5
Pain, hallucinations, anxiety, and depression can occur in GBS patients 7
Hospital-acquired infections, pressure ulcers, and deep vein thrombosis are potential complications 7
Treatment-related fluctuations (occur in 6-10% of patients within 2 months of initial improvement) should be monitored 6

Glucocorticoids are not recommended as first-line therapy as they have shown no significant benefit and may have negative effects on outcomes 2, 3
Physical therapy is important for rehabilitation but not the immediate priority for a patient with rapidly progressive weakness who can't stand 7
Antiviral therapy is not indicated as the preceding infection has usually resolved before the onset of GBS symptoms 2

Respiratory failure can develop rapidly, often without obvious clinical signs of dyspnea 1
The Erasmus GBS Respiratory Insufficiency Score (EGRIS) can help identify patients at risk of requiring ventilation 2
Avoid medications that can worsen neuromuscular function, such as β-blockers, IV magnesium, fluoroquinolones, aminoglycosides, and macrolides 3