Necrotizing fasciitis causes: Difference between revisions
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! Type !! Organism | ! Type !! Organism | ||
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| Type 1 (70%-80% cases) <br>Polymicrobial/[[Synergistic]] || ● Mixed aerobes and | | Type 1 (70%-80% cases) <br>Polymicrobial/[[Synergistic]] || ● Mixed aerobes, anaerobes and facultative anerobic bacteria <br> ● Often bowel flora-derived <br> ● Affects immunocomprmised or those with underlying abominal pathology | ||
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| Type 2 (20% to 30% cases) <br>Monomicrobial || ● [[Streptococci|Beta-Hemolytic Streptococci group A]] ([[Streptococcus pyogenes]]) <br> ● with/without ''[[Staphylococcus aureus]]'' <br> ● Skin or throat derived | | Type 2 (20% to 30% cases) <br>Monomicrobial || ● [[Streptococci|Beta-Hemolytic Streptococci group A]] ([[Streptococcus pyogenes]]) <br> ● with/without ''[[Staphylococcus aureus]]'' <br> ● Skin or throat derived | ||
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| Type 3 (common in Asia) <br>Gram negative monomicrobial NF (including marine related organisms)|| ● [[Vibrio|Vibrio spp]] mainly | | Type 3 (common in Asia) <br>Gram negative monomicrobial NF (including marine related organisms)|| ● [[Vibrio|Vibrio spp]] mainly <br> ● Raw oyster ingestion (''V.Vulnficus'') | ||
<br> ● wound contamination with sea water <br> ● Non-vibrio spp (Pasteurella multocida, Haemophilus influenzae, Klebsiella spp and Aeromonas spp) | |||
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| Type 4 ([[Fungal]]) || ● [[Candida]] ([[Immunocompromised]] patients) <br>● [[Zygomycetes]] ([[Immunocompetent]] patients) | | Type 4 ([[Fungal]]) || ● [[Candida]] ([[Immunocompromised]] patients) <br>● [[Zygomycetes]] such as Mucor and Rhizopus spp ([[Immunocompetent]] patients) | ||
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==References== | ==References== | ||
Revision as of 00:16, 5 September 2016
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Necrotizing fasciitis Microchapters |
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Diagnosis |
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Case Studies |
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Necrotizing fasciitis causes On the Web |
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American Roentgen Ray Society Images of Necrotizing fasciitis causes |
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Risk calculators and risk factors for Necrotizing fasciitis causes |
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief:
Overview
Causes
Necrotizing fasciitis may be caused by the following organisms
| Type | Organism |
|---|---|
| Type 1 (70%-80% cases) Polymicrobial/Synergistic |
● Mixed aerobes, anaerobes and facultative anerobic bacteria ● Often bowel flora-derived ● Affects immunocomprmised or those with underlying abominal pathology |
| Type 2 (20% to 30% cases) Monomicrobial |
● Beta-Hemolytic Streptococci group A (Streptococcus pyogenes) ● with/without Staphylococcus aureus ● Skin or throat derived |
| Type 3 (common in Asia) Gram negative monomicrobial NF (including marine related organisms) |
● Vibrio spp mainly ● Raw oyster ingestion (V.Vulnficus)
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| Type 4 (Fungal) | ● Candida (Immunocompromised patients) ● Zygomycetes such as Mucor and Rhizopus spp (Immunocompetent patients) |