Myasthénie Flashcards

1
Q

Anticholinestérasiques

A

TT SYMPTOMATIQUES

Pyridostigmine : cp de 60mg, durée d’action de 4h

Ambémonium : cp de 10mg, durée d’action de 4-6h

6 à 8cp /j en 3/4 prises

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2
Q

Effets indésirables anticholinestérasiques

A

Effets muscariniques et nicotiniques

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3
Q

Thymectomie

A

Systématique si thymome
Discutée si Ac-antiRACh et < 40 ans

Jamais si anti-MUSK

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4
Q

Corticoïdes

A

TT DE FOND

Prednisone 1mg/kg pdt 4-6 semaines

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5
Q

Autres immunosuppresseurs

A

TT DE FOND

Azathioprine 2 à 3mg/kg/j
effet retardé de 6 semaines à 3 mois

MMF

Rituximab, ciclosporine, tacrolimus, cyclophosphamide, éculizumab

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6
Q

Azathiopri,e

A

Dosage TPMT car toxicité hémato accrue si déficit en TPMT

EI : leucopénie, thrombopénie -> surveillance hebdo le premier mois puis mensuelle

STOP après plusieurs années de stabilisation

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7
Q

MMF - CI

A

Grossesse

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8
Q

Médicaments CI absolue

A

Aminosides
Cyclines
Macrolides
FQ
Bb
Chloroquine
Phénytoïne
Dantrolène
D-pénicillamine
Quindine

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9
Q

Médicaments CI relatives

A

Curares
Bzd
Neuroleptiques
Carbamazépine
Lithium

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10
Q

Stratégie - tous les patients

A

Anticholinestérasiques systématiques

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11
Q

Stratégie - myasthénie sévère

A

Cortico +/- azathioprine en hospit

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12
Q

Stratégie thymectomie

A

Thymome
< 40 ans avec anti-RACh

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13
Q

Stratégie crise

A

Réa + plasmaphérèse ou Ig IV + immunosuppresseur

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14
Q

Plasmaphérèse

A

2 à 4 sur 1 à 3 semaines

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15
Q

Ig IV

A

Perf de 1g/kg
ou
Cure de 2g/kg sur 5 j

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