sx miastenico de Lamber-Eaton LEMS Flashcards

1
Q

que es

A

transtorno poco frecuente de la UNM que genera debilidad de los musculos proximales y disfuncion autonomica

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2
Q

etiologia

A

paraneoplasico - asoc a carcinoma de pulmon de celulas pequeñas

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3
Q

asociado a

A

historial de tabaquismo positivo

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4
Q

fisiopato - anticuerpos contra canales de ca

A

↓ Ca = ↓ fusión de vesículas presinápticas → alteración de la liberación de acetilcolina en la UNM

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5
Q

Clinica

A

debilidad muscular de musculos proximales (mejora con el uso repetitivo o continuo)

reflejos reducidos o ausentes, sintomas autonomicos (boca seca, contipacio)

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6
Q

signo de lambert

A

la fuerza de agarre de la mano aumenta gradualmente durante varios segundos

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7
Q

prueba dx confirmatoria

A

anticuerpos anti-VGCC en suero.

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8
Q

tratamiento

A

1º tratar neoplasia maligna subadyacente

2º AMIFAMPRIDINA - mejora transmision muscular

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