SSTI- Skin & Soft Tissue Infection
Which of the following provide protection on the skin surface?
Sebum
Basic pH
Salty sweat
Which of the following is NOT found in the epidermis
Langerhans cells
Tightly packed cells
Skin infections can occur easily without a barrier break
Which of the following is an inflammation of the hair folicles?
Foliculitis
Impetigo
Cellulitis
Foliculitis is usually self limiting
Impetigo commonly effects visible skin (i.e. the face, arms and legs)
Why in Impetigo so infections?
The lesions spread bacteria
Once a colony is formed, the bacteria can spread through aeresol methods
The bacteria can spread in the bloodstream around the body
What is the difference between Impetigo and Cellulitis/Erysipelis?
Cellulitis is an infection of the subcutanous tissue
Impetigo is infectios, cellulitis is not
There isn't one- they're different names for the same thing
Which of the following are responsible for BOTH Necratising Faciitis and Cellulitis?
S.Aureus
S. Pyogenes
Vibrio Vulnificius
Why are wounds a problem?
They provide easy entrance for bacteria
They encourage bacterial growth
The body cannot detect bacteria growing in wounds
When diagnosing, what must be kept in mind when identifying wound bacteria?
Wound type
Bloody supply
Antibiotic resistance
Why is Tissue Asperation preferred to taking Wound Swabs?
Swabs are invasive
Swabs also pick up local flora
Swabs can carry bacteria into the wound
Anaerobic +ve cocci are usually Prestreptococcus
Since Staphylococcus and Streptococcus are both Aerobic Gram +ve Cocci, how do you differentiate them? Use the test that separates these two specifically.
Catalase test
DNAse test
Fermentation test
