IC14 SSTI Flashcards
What conditions predispose to SSTIs? (6)
diabetes, cirrhosis, HIV, neutropenia, transplant, immunosuppressive drugs
How should cultures be taken if the wound is draining (easily colonised)?
Clean the surface and obtain a culture from the base of the would (deep wound)
How to prevent SSTIs? (2)
- manage predisposing RF
- maintain integrity with good wound care (copious irrigation and remove foreign bodies)
Which SSTI is this?
Erythematous vesicular papules or pustules
Impetigo
Which SSTI is this?
Ulcerative form of impetigo
Ecthyma
Which SSTI is this?
Infection of hair follicle with pus
Furuncles
(Carbuncles - coalescence of furuncles that extend to subcutaneous layer)
Which SSTI is this?
Fiery red tender plaque
Erysipelas
Which SSTI is this?
Infection involving subcutaneous fat, usually on the lower limbs, always unilateral (usually with fever)
Cellulitis
What are the pathogens responsible for impetigo?
bullous - S. aureus
strep. pyogenes
What are the pathogens responsible for ecthyma?
strep pyogenes
What are the pathogens responsible for non-purulent cellulitis/erysipelas?
strep pyogenes
(some s. aureus, aeromonas, vibrio, pseudomonas)
What are the pathogens responsible for furuncles, carbuncles and purulent cellulitis?
mainly s. aureus (pus)
some strep pyogenes
Treatment for mild impetigo?
TOP Mupirocin BD x 5 days
Treatment for moderate impetigo and ecthyma? (3)
PO Cephalexin 500mg QDS
PO Cloxacillin 500mg QDS
PO Clindamycin 300mg QDS (in penicillin allergy)
Culture directed therapy for impetigo and ecthyma: S. pyogenes?
PO Penicillin V 500mg QDS
(P FOR PYOGENES AND PENICILLIN)