Diabetic foot infection

Question 1

DFI clinical presentation

Answer 1

• superficial ulcer, mild erythema
• deep tissue infection, extensive erythema
• localised gangrene, purulent discharge

Question 2

DFI mild definition

Answer 2

infection of skin and SC tissue, erythema < 2cm, no systemic

Question 3

DFI mild Abx

Answer 3

• PO Abx: cephalexin, cloxacillin, clindamycin
• MRSA risk factor: cotrimoxazole, clindamycin, doxycycline

Question 4

DFI moderate definition

Answer 4

infection of deeper tissue, erythema > 2cm, no systemic

Question 5

DFI moderate Abx

Answer 5

• initial IV: augmentin, cefazolin/ceftriaxone + metronidazole
• MRSA risk factors: vanco, dapto, linezolid

Question 6

DFI severe definition

Answer 6

Infection of deeper tissue, erythema > 2cm, systemic infection

Question 7

DFI severe Abx

Answer 7

• initial IV: pip-tazo, cefepime + metronidazole, mero, cipro + clinda
• MRSA risk factor: vanco, dapto, linezolid

Question 8

DFI duration

Answer 8

• no bone involved
  ** mild 1-2 wks
  ** moderate 1-3 wks
  ** severe 2-4 wks
• bone involved
  ** amputation: 2-5 days
  ** residual infected tissue 1-3 wks
  ** residual viable bone 4-6 wks
  ** X surgery or residual dead bone > 3 months