guillain-barré-associated campylobacter jejuni activates ...€¦ · guillain-barré syndrome in...
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Guillain-Barré syndrome in children
Coriene Catsman-Berrevoets
Paediatric neurologist
Erasmus MC - Sophia
Rotterdam, the Netherlands
EPNS teaching course , Budapest march 2015
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GBS
Guillain-Barré syndrome (GBS) is the most common cause of
acute flaccid paralysis in children since the successful
vaccination programs against poliomyelitis.
Estimated incidence of GBS
in children (0-15 yrs) is 0.34 to 1.34 /100.000 per year
(in adults: 1:100.000 persons/ year)
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Symptoms of periferal versus central nervous system
Periferal nervous system:
Anterior horn motor neuron
Afferent and efferent roots
Sensory-motor nerve
Neuromuscular junction
Muscle
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Symptoms of periferal versus central nervous system
Periferal nervous system:
Anterior horn motor neuron
Afferent and efferent roots
Sensory-motor nerve
Neuromuscular junction
Muscle
Symptoms:
Paresis/ paralysis
Hypotonia
Low or absent reflexes
fasciculations
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Diagnostic criteria
Essential criteria
Progressive, more or less symmetrical weakness of 2 or more limbs
Areflexia / hyporeflexia
Most severe paresis < 4 weeks
No other cause
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Findings supporting a diagnosis of GBS
Essential criteria
Progressive, more or less symmetrical weakness of 2 or more limbs
Areflexia / hyporeflexia
Most severe paresis < 4 weeks
No other cause
Findings supporting GBS diagnosis (not always present)
Sensory deficits, pain, facial weakness
Difficult in swallowing, respiratory insufficiency
Spinal fluid abnormalities
EMG abnormalities
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Spinal fluid in GBS
- in the first week after onset in 50 % of GBS patients normal
- after two weeks 80% has a raised spinal fluid protein content
- cell number is normal or slightly raised
(< 50 cells x 106 mononuclear cells
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EMG
It is typically prudent to wait at least 7-10 days for electrical studies to
be informative.
If electrical studies are performed too early, normal results can be
falsely reassuring.
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EMG
First week after onset of symptoms
- dispersed, impersistent, prolonged, or absent F response (88%)
- increased distal latencies (75%)
- conduction block (58%) or temporal dispersion of compound muscle
action potential (CMAP)
- reduced conduction velocity (50%) of motor and sensory nerves
Second week of illness
- reduced compound muscle action potential (CMAP, 100%)
- prolonged distal latencies (92%)
- reduced motor conduction velocities (84%) are prominent.
.
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EMG
Criteria for axonal forms of GBS include
- lack of neurophysiologic evidence of demyelination
- loss of amplitude of CMAP or sensory nerve action potentials to at
least less than 80% of lower limit of normal values for age
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Symptoms that may point to another diagnosis than GBS
- Relatively mild paresis of arms and legs and:
- severe pulmonary dysfunction
- severe sensory deficits
- clear deficits of bladder and/ or bowel
- Fever
- Sensory level
- Slow progression (> 4 weeks)
- Clear and persisting asymmetry of muscle weakness
- Persisting bladder and bowel dysfunction
- Spinal fluid > 50 x 106/ mononuclear cells
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Clinical GBS variants
- acute inflammatory demyelinating polyradiculopathy
- acute motor axonal neuropathy
- acute motor and sensory axonal neuropathy
- Miller Fisher syndrome (ophthalmoplegia, absent tendon reflexes,
ataxia) GQ1b ganglioside often positive!
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RARE GBS variants
- pharyngeo-cervical brachial variant
- pure sensory axonal neuropathy
- Bickerstaff encephalitis
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Histological classification of GBS
Demyelination
Acute inflammatory demyelinstin
neuropathy (AIDP)
Axonal degeneration
Acute motor axonal neuropathy
(AMAN)
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Differential diagnosis
(Sub)acute flaccid paresis in children
Poliomyelitis
Lyme disease (Borrelia)
Botulism
Spinal Muscular Atrophy (SMA)
Myelopathie
Myasthenia gravis
Toxic: arsenic acid, thallium, organic phosphates
Wernicke disease
Critical illness polyneuropathie
Vasculitis
Toxins of weird animals
ciguatera
Black widow
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Diagnosis in children is often difficult….
2520151050
1.0
0.8
0.6
0.4
0.2
0
Children ≥ 6 years (N=28)
Children < 6 years (N=22)
Doctors delay (days)
Pro
po
rtio
n o
f p
atie
nts
with
dia
gn
osis
GB
S
Roodbol et al. Neurology 2011;76(9):807
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First diagnosis in our cohort of 56 children
75% of the children < 6 years old: pain in neck and or legs
First diagnosis in majority: ‘flue’, pneumonia, suspicion of a metabolic
disease, myopathy, tonsillitis, acute rheumatic fever
3 malignancy, 2 meningitis, 4 coxitis
1 no idea
7 suspicion of Guillain-Barré syndrome
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Hypothesis of pathogenesis GBS: molecular mimicry
infection Susceptible host
APC T
B immuunreaction
cross-reactive
antibodies
Immune reaction auto-immune reaction
against peripheral
nerves and/ or
Schwann cells
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Clinical disease pattern in GBS
weken Infectiion
Serum anti-ganglioside antibodies
Progressive paresis Plateau phase recovery phase Residual deficits
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Miller Fisher variant GBS
Puur motore variant GBS
Antibodies in GBS patients are against ganglioside
ceramideGQ1b
ceramideGT1a
ceramideGD2
ceramideGD3
ceramideGD1bceramideGM1
ceramideGD1a
ceramideGM2
ceramideGM3
ceramideGM1b
ceramideGalNAc-GD1a
ceramideGT1b
ceramideGQ1b ceramideGQ1b
ceramideGT1a ceramideGT1a
ceramideGD2 ceramideGD2
ceramideGD3 ceramideGD3
ceramideGD1b ceramideGD1bceramideGM1 ceramideGM1
ceramideGD1a ceramideGD1a
ceramideGM2 ceramideGM2
ceramideGM3 ceramideGM3
ceramideGM1b ceramideGM1b
ceramideGalNAc-GD1a ceramideGalNAc-GD1a
ceramideGT1b ceramideGT1b
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Treatment
Admit a child to ICU
- rapid progression of motor deficits
- threat of airway obstruction or respiratory insufficiency
- impairment of autonomic functions
- severe swallowing problems
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Treatment with IVIg of children with GBS
Indicated when: Unable to walk independently
(threat of) respiratory insufficiency
Bulbar weakness
Autonomic dysfunction
Fast progression of symptoms
Repeated infusions of IVIg are indicated when: Deterioration after initial stabilisation or amelioration
No or insufficient effect of first IVIg treatment ?
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Prognosis
More favourable than in adults!
at the moment of maximum neurological symptoms
walking with aid : 45%
Bed/wheelchair : 40-60%
Mechanical ventilation: 15-20%
Death: : 1-2 %
Treatment related fluctuation : 10%
relapse < 4weken
Transition tor CIDP : 2%
relapse > 4 weken
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Prognosis
Mortality
Adults: 2,8%
Children 2%
Needs ventilation
Both 25%
Outcome 6 months
Non-ambulant
6% children
20% adults
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Long term sequelae in 37 patients with childhood GBS
23/ 37 were now adults (age range 4-39 y, median 20 years)
Follow up: 1-22 years (median 11 years)
26% had problems at school after GBS
13% had to repeat a class
11% had to continue at a lower level at school
3% (one child) could not go to school because of evere fatigue
11% could not work because of sequalae
Roodbol et al. J Peripher Nerv Syst. 2014
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Long term sequelae
Risk of recurrence of GBS is low (1 à 2%)
Prognosis for regaining ambulation is excellent
In our cohort 10% had a persisting handicap
BUT
50% still suffered from fatigue, which was very disabling in some
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Conclusions GBS in children
In children < 6 years diagnosis can be difficult
Often atypical presentation with a lot of pain
In case of rapid neurological deterioration ICU monitoring
Prognosis of GBS in children is in general better than in adults, maybe because of better nerve regeneration
At long term persisting neurological impairments, handicaps and fatigue may occur
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Thanks to: GBS- kids study group
Paediatric Neurology
Joyce Roodbol
Marie-Claire de Wit
Coriene Catsman
Paediatrics
Annemarie van Rossum
Emiel Spuesens
Matthijs de Hoog
Neuroimmunology
Bart Jacobs
Christa Walgaard
Neurphysiology
Judith Drenthen
Joleen Blok