Clostridium perfringens Flashcards

(10 cards)

1
Q

groep

A

grampositief

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2
Q

vorm

A

staaf/bacil

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3
Q

metabolisme

A

anaeroob

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4
Q

wat doen die in ongunstige omstandigheden

A

sporenvorming

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5
Q

epidemiologie

A
  • Wijd verspreid in de omgeving
  • Commensaal darmslijmvlies
  • Subtypering obv. toxine productie => type A
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6
Q

type A

A
  • meest voorkomend
  • betrokken bij wondinfecties, gasgangreen en voedselvergiftiging
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7
Q

Pathogenese

A
  • 12 verschillende toxines en/of enzymen
  • alfa-toxine = lecithinase: lysis van RBC, bloedplaatjes, WBC en endotheliale cellen => verhoging vasculaire permeabiliteit, hemolyse, weefseldestructie
  • bèta-toxine = protoxine: geactiveerd door trypsine => necrose thv darmslijmvlies
  • enterotoxinen: komt vrij in alkalisch milieu van de dunne darm => waterige diarree
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8
Q

ziektebeelden

A
  • Infecties van weke delen (cellulitis, necrotiserende fasciitis, gasgangreen)
    => kan traumatisch of spontaan
  • Voedselvergiftiging
  • Necrotiserende enteritis
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9
Q

diagnose

A
  • gramkleuring
  • cultuur wondvocht/faeces
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10
Q

behandeling fasciitis en gasgangreen

A
  • Zsm heelkunde: wonde openleggen en alle necrotisch weefsel debrideren
  • antibiotica: penicilline HD + clindamycine
  • controversieel: rol van hyperbare O2
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