Infection by systems (skin) Flashcards
From superficial fascia to muscle: infections in here can cause rapid deterioriation & death; requires ________ + ________
PROMPT SURGICAL DEBRIDEMENT + antibiotics
Necrotizing fasciitis: pain or very ill-looking patient which is ________with the visual skin appearance
out of proportion
Organisms responsible for cellulitis, impetigo, folliculitis, etc
- Staph aureus (gram +ve)
- Beta-haemolytic strep esp. Group A strep
Organisms responsible for erysipelas
Group A strep (gram +ve)
Organisms responsible for lymphangitis
Group A strep
Organisms responsible for gas gangrene
Clostridium series
Spontaneous/haematogenous gas gangrene (SGG)– Group A strep
Necrotic tissue– (Clostridium perfringens)
What infections can group B strep cause?
- Blood Infection (septicaemia)
- Lung infection (pneumonia)
- Infection of the lining of the brain and spinal cord (meningitis)
Difference btw MRSA and MSSA (each tends to be associated with …?)
MRSA: tends to be associated with hospital-acquired infections
MSSA: tends to be associated with community-acquired infections
Why important to differentiate MRSA and MSSA?
MRSA strains are more virulent than MSSA strains. MRSA cells are resistant to all β-lactam antibiotics, and can acquire resistance to other antibiotics easily, leading to the development of multiresistant strains.
Testing option for conditions like necrotising fasciitis
Tissue culture
Testing option for conditions like diabetic foot ulcers
Deep tissue culture/biopsy
Bugs responsible for new onset wound infection
staph aureus / streptococci
Bugs responsible for chronic wound infection
gram -ve organisms, or mixture of gram +ve & gram -ve organisms
When swabbing chronic wounds, they would almost always yield ____ and very likely ______
bacteria; polymicrobial
What is the most typical bug causing discitis (rarer infection)(infection of the spine)?
staph aureus
