derm - skin & soft tissue infections

Question 1

what pathogen causes impetigo

Answer 1

staph aureus - golden coloured, hence causing honey crusted appearance

Question 2

what pathogen causes cellulitis

Answer 2

staph aureus
grp A strep

Question 3

what pathogen causes intertrigo (betw skin folds, esp in high BMI/diabetic pts)

Answer 3

staph aureus, candida coliforms

Question 4

which pathogen causes erysipelas and lymphangitis

Answer 4

group A strep

Question 5

which pathogen causes gas gangrene

Answer 5

clostridium perfringens(survives without o2, lives in soil)
grp A strep

Question 6

which pathogen causes necrotising facscitis

Answer 6

grp A strep

Question 7

which pathogen causes rare infection such as septic arthritis and osteomyelitis

Answer 7

staph aureus

Question 8

antitbiotic used for staph aureus

Answer 8

methicillin, cloxacillin

Question 9

can u use cloxacillin in mrsa

Answer 9

no they are methicillin resistant

Question 10

which pathogen is responsible for chronic wound/diabetic foot ulcer

Answer 10

acute - staph aureus/ grp A strep (eg cellulitis)
chronic - ++ coliforms, p.aeruginosa, enterococcus

Question 11

when do u get a polymicrobial results

Answer 11

chronic wound! (+/- foreign matter - eg vac pump)