Diabetic Foot Infections Flashcards
What is the lifetime incidence of developing a DFU?
25%
what percentage of infected DFU will have underlying osteomyeitis?
20-68%
Name some risk factors for infection or ulceration.
- peripheral motor neuropathy
- peripheral sensory neuropathy
- autonomic neuropathy
- Neuro-osteoarthropic deformitis (i.e. Charcot)
- vascular insufficiency
- hyperglycemia
- patient disabilities
- maladaptive patient behavior
- healthcare system failure
how is infection clinically diagnosed?
presence of purulence
OR 2+ cardinal signs of inflammation
Classify this wound: wound without purulence or any manifestations of inflammation
uninfected
Classify this wound:
- cellulitis or erythema 0.5cm-2cm around ulcer
- infection is limited to skin or superficial subcutaneous tissue
mild
Classify this sound:
-erythema > 2cm or involving deeper structures than skin or subcutaneous tissue
AND no systemic inflammatory response syndrome (SIRS)
moderate
Classify this wound:
- location infection w/ signs of SIRS as manifested by 2 of the following:
- temp > 38 C
- HR> 90bpm
- RR > 20 breaths/min
- PCO2 12,000
severe
which microorganisms are found in diabetic foot infections?
staph and strep
Name this bacteria: thick, yellow purulent drainage
MSSA
name this bacteria: deeper red infection than staph but not as purulent
strep
name this bacteria: fruity smell, green tinge to the wound
pseudomonas
Name this bacteria: extreme foul smell; brown, watery discharge
anaerobes
What ESR level and CRP indicates osteo?
ESR > 60
CRP > 3.2
along with ulcer >3mm
soft tissue infection is positive in which phases of Tc 99 bone scan ?
1st (immediate) and 2nd (blood pool) phase
