soft tissue infection

Question 1

what is cellulitis

Answer 1

red deep infection

Question 2

what is ecythema

Answer 2

crusty deep lesion

Question 3

what is impetigo

Answer 3

superifical crusty lesion

Question 4

what is erysipelas

Answer 4

superficial red patch that has very clear boundaries

Question 5

what causes impetigo

Answer 5

either s.aureus or s.pyogenes

-very contaigous

Question 6

what causes ecthyma

Answer 6

also s.aurues and s.pyogenes but deeper form into dermis

Question 7

what causes ecthyma gangrenosum

Answer 7

pseudomonas aeruginosa

Question 8

causes of cellulitis

Answer 8

s.aureus or beta haem strep

Question 9

what is erysipelas caused by

Answer 9

group a beta haem strep pyogenes

• lypmatics
• distinct borders

Question 10

what is a furuncle

Answer 10

deep folliculitis of one hair follicle also called a boile

Question 11

what causes furuncles

Answer 11

s.aurues

Question 12

what is a carbuncle

Answer 12

multiple hair follicles infected and systemic upset possible

Question 13

what is erysipeloid

Answer 13

dermatitis of the hand due to a bacterial infection

Question 14

what causes necrotising fasciitis

Answer 14

monomicrobial usually s.pyogenes

polymicrobial with s.aureus

Question 15

clinical features of nec fasciitis

Answer 15

• pain that is out of proportion or unrequitting
  skin necrosis
  multi-organ failure

Question 16

treatment nec fasci

Answer 16

• ben pen
• fluxoc
• clinda
• metro
• genta

Question 17

what causes gas gangrene

Answer 17

clostridium perfringens

Question 18

what is fournier’s gangrene

Answer 18

type of necrotising fasciitis affecting external genitalia or perineum

Question 19

what causes toxic shock

Answer 19

s. pyogenes

s. aureus

Question 20

what causes myonecrosis

Answer 20

clostridium perfringens

Question 21

risk factors for clostridium ssti

Answer 21

• wound contaminantion

- IVDU spores

Question 22

risk factor for ecthyma gangrene

Answer 22

water or hot tub

Question 23

what does virbrio vulnificus cause and risk factor

Answer 23

-gas ganrene

due to saltwater, fish handling

Question 24

where is aeromonas hydrophila infection

Answer 24

fresh water

Question 25

what causes pasteruella infection

Answer 25

dog, cat bite or wound

Question 26

what causes erysipelothix rhysopathiae infection

Answer 26

puncture wound

shrimp or crab

Question 27

what is sirs

Answer 27

systemic inflammatory response

Question 28

what is septic shock

Answer 28

SIRS plus infection

Question 29

SIRS criteria

Answer 29

two or more of
temp >38 or <36
hr >90
rr>20
wcc >12 or <4

Question 30

how does cellulitis go to nec fasciitis

Answer 30

o Hyperinflammation
o Bacterial burden-intracellular survival-bacterial enzymes/ exotoxin- direct tissue destruction
o Neutrophil predominant
o Pro-inflammatory cytokine millieu (IL-1, TNFb, IFN Y)-neutrophil degranulation
o Microvascular thrombosis
o T cell migration-further amplification
o Dysregulation of the immune response
o Overwhelming sepsis-immune regulatory mechanisms overpowered
-inappropriate response

Question 31

test for nec fasciitis

Answer 31

if run finger over produces immense pain woody tissue

Question 32

imetigo treatment

Answer 32

fluxoc

Question 33

erysipelas (strep_ treat

Answer 33

fluxoc

amoxi

Question 34

mssa cellulitis

Answer 34

flucox

Question 35

mrsa cellulitis

Answer 35

vancomycin

Question 36

how long isolation for group a strep

Answer 36

minimum 24 hours

Question 37

difference recurrent cellulitis in strep and s.aureus

Answer 37

strep=previous site

s.aureus=different site