Microbiology

Question 1

What is more likely to cause skin infections? Gram positive or gram negative?

Answer 1

Gram positive

Question 2

Bacteria that may be commensals?

Answer 2

NOT PROBLEMATIC

• Staph epidermidis (coagulase negative)
• Corynebacterium
• Propionibacterium

Question 3

If patient with no clinical question of infection comes back with a positive bacterial swab. Would you prescribe antibiotics?

Answer 3

ONLY swab if there is a clinical question of infection including in ulceration

Can have commensal bacteria

Question 4

Some strains of staph aureus produce toxins, what one causes dermatological symptoms

Answer 4

SSSST - staph scalded skin syndrome toxin

Question 5

Antibiotics that work on MRSA

Answer 5

Doxyxcycline
Clindamycin (one of 4C’s)
Co-trimoxazole

NOT flucloxacillin

Question 6

Necrotising fasciitis

Answer 6

SEVERE PAIN
Deeper than cellulitis

Surgical debridement (cut open and antibiotics go right in)