GBS.ppt
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Guillain-Barré Syndrome(Ghee-yan Bah-ray)
Dr Hermanto Swatan, Sp.S, FINS
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Quick Overview
Guillain-Barré is a non-contagious autoimmune disorder that affects approximately 1 in every 100,000 individuals in the United States.
It is not clear yet if a specific disease-causing agent is involved so Guillain-Barré is called a syndrome rather than a disease
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Guillain-Barre Syndrome (GBS)
Acute, frequently severe fulminant polyradiculoneuropathy
Autoimmune Occurs year round 3500 cases per year in US and Canada Males are 1.5x than females Adults > Children
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Pathogenesis
Acute autoimmune disorder
There is involvement of T lymphocytes and B lymphocytes
Brain is unable to send messages
Legs and arms are commonly affected
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Etiology
There are varying degrees of severity
Onset usually occurs 1-3 weeks after exposure to a viral infection
Destruction most often occurs in segments between the Nodes of Ranvier
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Etiology
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Clinical Manifestations
Signs and Symptoms Include…
Paresthesia Muscle Weakness Possible Paralysis
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Clinical Manifestations
Rapidly evolving (hours to days) Areflexic motor paralysis: “Rubbery legs” Sensory loss Proprioception Usually upward progressing Lower cranial nerves: OP dysphagia Pain: “Deep aching pain” Transient bladder dysfunction
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Other Clinical Manifestations
Autonomic Dysfunction: Wide fluctuations in BP, Orthostatic Hypotension, and Cardiac Arrhythmias
SIADH
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Antecedent Events
70% of cases occur 1-3 weeks after infectious process
20-30% of all cases are associated with Campylobacter jejuni (summer outbreaks in China among kids and young adults)
Also HHV, CMV or EBV Mycoplasma pneumoniae Recent Immunizations Lymphoma (Hodgkin’s) HIV SLE
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Molecular Mimicry
Immune responses to non-self antigens Misdirect to host nerve tissue through resemblance Neural targets are gangliosides, particularly at the
Nodes of Ranvier
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Molecular Mimicry
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Diagnosis
Rapid development of muscle paralysis, areflexia, absence of fever
CSF: Elevated protein level without pleocytosis
EMG and Nerve conduction show slowing CSF and EMG are used to verify symptoms
but may not be abnormal until a week after onset
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Required Diagnostic Criteria
Progressive, relatively symmetrical weakness of two or more limbs
Areflexia Course < 4 weeks Exclusion of other causes
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Supportive Diagnostic Criteria
Symmetric Weakness accompanied by numbness and/or tingling
Mild Sensory Involvement Facial Nerve or other cranial nerve
involvement Absence of fever Typical CSF findings Evidence of demyelination from EMG
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Differential Diagnosis Acute Myelopathies Botulism Diptheria Lyme disease with polyradiculitis Porphyria Vasculitis Neuropathy Poliomyelitis CMV polyradiculitis Critical Illness Neuropathy Myasthenia Gravis Poisonings with Organophosphates or arsenic Paresis from West Nile Virus Spinal Astrocytoma Motor Neuron Disease
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Treatment
There is no cure for Guillain-Barré Syndrome, but there are treatments available…
Plasmapharesis Immunoglobulins
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Treatment
Supportive Management: Telemetry, Blood pressure Rx, DVT prophylaxis, Vital Capacity/NIF
High dose IVIg or PLEX: Two weeks after the first motor symptom immunotherapy is no longer effective
Meta-anaylsis of randomized clinical trials indicate Rx reduces the need for mechanical ventilation by 50% and increases the likelihood of full recovery at one year from 55% to 68%
Steroids have not shown to be effective
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Prognosis
Most of the time recovery starts after the 4th week from onset of disease
80% complete recovery within months to a year; Areflexia usually persists
5-10% have relapse CIDP Mortality rate is <5% in optimal settings Death results usually from pulmonary
complications
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Thanks for your attention
Good Luck and Never Give Up