skin and soft tissue Flashcards
what is an enanthem
lesion on mucosal membrane
what is an ecchymosis
large area of bruising
how is dry skin a risk factor for skin infections
subaceous fluids keep pH low, together with fatty acids help to inhibit microbial growth
what microbes are more commonly responsible for skin infections in diabetics
s aureus
grp b strep
anaerobes
g -ve bacilli
what microbes are more commonly responsible for skin infections in IVDU
MRSA
Ps aeruginosa
is staph aureus an anaerobe aerobe or facultative organism
facultative
what is MRSA usually resistant against
flucloxacillin
name a few antibiotics that can be used against MRSA
vancomycin
daptomycin
tetracycline
clindamycin
what does crepitus in a skin infection indicate
gas gangrene
in severe infections, what can thrombocytopaenia be an early indicator of?
DIC
what blood marker will be different in rhabdomyolisis
hypocalcaemia
order by depth of infection
erysipelas necrotising fasciitis ecythema cellulitis impetigo
impetigo erysipelas ecythema cellulitis necrotising fasciitis
what is impetigo caused by
staph aureus
how deep does erysipelas go to
upper dermis
where does erysipelas usually affect
face cheeks, periorbital region
what causes ecythema
group a beta haemolytic streptococcus
what do these affect? - folliculitis, furuncles, carbuncles
hair follicles
name 2 organisms that can cause cellulitis
strep pyogenes
staph aureus