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20 Cards in this Set
- Front
- Back
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Vast majority of skin infections are caused by which pathogen? |
S.aureus |
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In which two sets of patients is the range of organisms more diverse? |
Immunocompromised Diabetics |
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What is erysipelas? |
An acute infection of the upper dermis and superficial lymphatics causing a rash |
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What is the most common cause of erysipelas? |
Group A streptococci
S.pyogenes |
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Name 4 predisposing factors for erysipelas |
Lymphoedema Venous stasis Obesity Diabetes |
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Describe the erysipelas rash |
Painful Bright red Oedematous Peau d'orange
70-80% on the lower extremities |
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Scarlet fever is most commonly due to which pathogen? |
S.pyogenes |
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What happens 2-5 days following the onset of the rash in scarlet fever? |
Desquamation, due to organsims producing toxins |
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SSS is due to what pathogenic process? |
An exfoliative toxin causing intradermal cleavage at the granular layer |
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Toxic shock syndrome is caused by which toxin? |
TSST-1 |
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What is cellulitis? |
An acute spreading tissue infection of the skin extending deeper than erysipelas and involving SC tissues |
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Most common two causes of cellulitis? |
S.aureus Group A streptococci |
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Name a regimen used to treat cellulitis |
Benpen + flucloxacillin + metronidazole or Cephalosporin + metronidazole or Meropenem + Vancomycin |
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Gas gangrene is usually as a result of what? |
Trauma |
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The wound becomes contaminated with which organism in gas gangrene? |
Clostridium perfringens |
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Gas gangrene may occur after which kind of surgery? |
Bowel surgery |
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Treatment for gas gangrene? |
Broad ABx until culture i.e benpen plus gentamicin plus metronidazole
Cheeky bit of hyperbaric oxygen |
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Causative bacteria of anthrax? |
Bacillus anthracis |
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Which professions are at risk and how does it present? |
Vets Farmers
Cutaneous anthrax = malignant pustule
Pulmonary anthrax = inhalation of spores |
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Rx for Anthrax = |
Penicillin |
