Staph Vs Strep Flashcards
what does staph and strep usually cause?
skin and soft tissue infections
which bacteria is coagulase positive?
staphylococcus aureus
what is Streptococcus pyogenes sensitive to?
Penicillin (theres no problem with resistance like there is with staphylococcus aureus).
which bacteria colonises the skin and mucosa normally?
Staphylococcus aureus
Which bacteria colonises the oropharyngeal carriage?
Streptococcus pyogenes (GAS)
which syndromes are unique to staphyloccocus aureus?
Staphylococcal scalded skin syndrome
what syndromes are uniquely caused by group A streptococcus?
Scarlet fever
what is scarlet fever?
a reaction to the toxins produced by group A Streptococcus pyogenes
what age is scarlet fever most common in?
2-6 yrs
most common is age 4
how long is the incubation period for scarlet fever?
2-4 days
What are the signs of scarlet fever?
fever malaise headache nausea sore throat STRAWBERRY TONGUE rash (sandpaper texture)
What is the treatment for scarlet fever?
10 days of oral penicillin
^doesnt really reduce the illness but it reduces complications and infectivity
What is the main complication of scarlet fever?
rheumatic fever - occurs 20 days after the infection
where does the rash spare in scarlet fever?
doesn’t affect palms or soles
Around the mouth
when does the rash appear in scarlet fever?
usually 2 days after symptoms begin
what infection can be caused by both staphylococcus aureus and group A streptococcus?
toxic shock syndrome - another toxin mediated disease (like scarlet fever).
which cause of toxic shock syndrome has a higher fatality?
more people due from group a strep shock
what are the signs of toxic shock syndrome?
Fever sunburn rash (diffuse maculopapular) swollen lips strawberry tongue diarrhoea (if staph A) rapidly progresses to multi organ failure: tachycardia prolonged CRT hypotension renal impairment transaminitis reduced GCS
What is the management of toxic shock syndrome?
IV flucloxacillin + clindamycin.
IV immunoglobulins.
why are NSAIDs avoided in TSS?
They increase the risk of necrotising fascitis.
