ENTÉROBACTÉRIES Flashcards

1
Q

Entérobactérie sont GRAM +

A

Faux GRAM -

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2
Q

5 types d’entérobactéries

A
  • escherichia
  • Shigella
  • Salmonella
  • Klebsiella
    -Yersinia
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3
Q

Caractère biactério

A
  • culture classique
  • aéro-anaérobie
  • fermentent le glucose
  • oxydase -
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4
Q

Les 3 structures antigéniques

A
  • Ag O = Ag de la paroi = LPS= endotoxines thermostables
  • Ag H = flagellaire
  • Ag K = capsulées
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5
Q

Diagnostic direct

A
  • sur prélèvement → sang/selles/LCR …
  • B - apres 24h
  • spectro ou Ag spe
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6
Q

Diagnostic indirect

A
  • sérodiagnostic → inf a salmonelle maj
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7
Q

Les 3 gp de comportement fac au B-lactamines

A
  • 1= sensibles a toutes les B-L
  • 2= résistant pénicillines mais sensible acide clavulanique
  • 3= résistant pénicillines + C1G
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8
Q

KES est un pathogène opportuniste

A

VRA

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9
Q

Patient à risque des KES

A
  • ATCD compliqué
  • hospitalisation longues
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10
Q

Types d’infections donné par KES

A
  • septicémies de mauvais pronostic pusique prod d’endotoxine
  • inf urinaires tenaces
  • surinfection respiratoire
  • multiplication des actes
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11
Q

Facteur fav le developpement des KES

A

Humidité

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12
Q

Résistance chez les KES

A
  • aminosides
  • fluoroquinolones
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13
Q

Ttt 1er intention inf urinaire basse

A
  • nitrofurantoïne
  • fosfomycine
  • sulfamethoxazole
  • fluoroquinolones
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14
Q

Ttt inf urinaire grave

A
  • C3G
  • aminoside
  • fluoroquinolones
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