Ponction lombaire Flashcards

1
Q

Les 5 éléments d’interprétation d’une PL?

A
  • Aspect macroscopique
  • Cytologie
  • Proteinorachie
  • Glycorachie
  • Pression d’ouverture
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2
Q

Cytologie d’une PL normale?

A

< 5/mm3

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3
Q

Protéinorachie d’une PL normale?

A

<0,4g/L

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4
Q

Glycorachie d’une PL normale?

A

> 50% de la glycémie veineuse

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5
Q

Pression d’ouverture d’une PL normale?

A

<16cmH20

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6
Q

Aspect macroscopique d’une PL normale?

A

LCR clair “eau de roche”

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7
Q

Description du LCR d’une méningite purulente?

A
  • Macro = trouble, purulent
  • Cyto = >10/mm3 = Pleïocytose a PNN
  • Proteino = augmentée
  • Glyco = diminuée
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8
Q

Description du LCR d’une méningite lymphocytaire?

A
  • Macro = Clair, eau de roche
  • Cyto = >10/mm3 = Pleïocytose a lymphocytes
  • Proteino = augmentée
  • Glyco = Normale
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9
Q

Description du LCR d’une méningite a BK ou listeria?

A
  • Macro = Clair, eau de roche
  • Cyto = >10/mm3 = Pleïocytose, PNN ~ Lymphocytes
  • Proteino = augmentée
  • Glyco = Diminuée
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10
Q

Description d’une PL de SEP?

A
  • Macro = clair, eau de roche
  • Cyto = Pleïocytose modérée ( 0,7 = synthèse INTRATECHALE
  • Glucose = Normal
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11
Q

Description d’une PL d’HM?

A
  • Macro = aspect rouge, rosé, incoagulable, HOMOGENE dans les 3 tubes
  • Pression = hypertendue
  • Cyto = Sidérophages, GR altérés, pigments dans le surnageant
  • Hyperprotéinorachie
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12
Q

Définition d’une DAC?

A
  • Hyperprotéinorachie

- Sans hypercellularité

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13
Q

4 étiologies de DAC? (±1)

A
  • Guillain Barré
  • Diabète sucré
  • Compression médullaire
  • Poliomyelite
    ± Neuropathie diabétique
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14
Q

Modalités de réalisation d’une ponction lombaire?

A
  • Apres TDM ou FO si HTIC
  • Avant ATB sauf indication ATB d’emblée
  • En asepsie
  • Aiguille de faible diamètre
  • 3 tubes = biochimie, cytologie, bacterio/viro
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15
Q

Contre indications a la PL?

A
  • HTIC

-

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