Skin & Soft Tissue Infection (SSTI) Flashcards Preview

MD2002 > Skin & Soft Tissue Infection (SSTI) > Flashcards

Flashcards in Skin & Soft Tissue Infection (SSTI) Deck (26):
1

Which layer(s) of the skin does cellulitis extend into?

Epidermis
Dermis

2

Which layer(s) of the skin does erysipelas extend into?

Epidermis
Superficial dermis

3

Which layer(s) of the skin does necrotising fasciitis extend into?

Epidermis
Dermis
Hypodermis

4

Which layer(s) of the skin does impetigo extend into?

Epidermis

5

What is a major cause of deep SSTI?

Animal bites

6

In the case of a bacterial infection, what re the most abundant leukocytes?

Neutrophils

7

What is the most common bacterial film appearance causing SSTI?

GRAM POSITIVE COCCI
(only rarely is SSTI caused by gram negative cocci)

8

Name a gram negative coccus bacterium which is penicillin sensitive and is present in cases of zoonosis, septic arthritis, septicaemia and meningitis.

Pasteurella multocida

9

What percentage of A&E visits does animal bites account for?

3%

10

What is the most common location of an animal bite on a child?

Facial/Cervical

11

What is the most common location of an animal bite on an adult?

Extremities

12

How does dog bite differ from a cat bite?

Cat = deep puncture wound, little superficial damage
Dog = extensive superficial injury, crush injury

13

What are some potential dangers regarding human bites?

Can lead to clenched fist due to tendon damage in the hand
Common deep infection
Blood-bourne viruses

14

List the four steps of animal bite wound management.

Full History
Radiology
Wound Management
Antibiotic Therapy

15

Why are antibiotics administered?

Prevents disease/reduces risk of infection
Prolonged use usually selects for drug resistance
High risk patients benefit most from use of antibiotics

16

When are antibiotics generally administered and how long is the average course?

Prior to surgery
7 day course

17

What should NEVER be used as treatment/prophylaxis of an animal bite?

CLINDAMYCIN MONOTHERAPY
(ERYTHROMYCIN MONOTHERAPY)

18

What is meant by 'mono therapy'?

Use of the drug on its own

19

Name the antibiotics used for mild-moderate cases of animal bites.

Co-amoxyclav
Doxycycline & Metronidazole
Clindamycin & Ciprofloxacin

20

Name the antibiotics used for sever cases of animal bites.

Co-amoxyclav
Ben pen, Ciprofloxacin & Mtz
Meropenem & Clindamycin

21

How long should the course of antibiotics be for treatment of cellulitis?

7-10 days

22

How long should the course of antibiotics be for treatment of tenosynovitis?

21 days

23

How long should the course of antibiotics be for treatment of septic arthritis?

28 days

24

How long should the course of antibiotics be for treatment of osteomyelitis?

42 days

25

Why are antibiotic courses for septic arthritis, tenosynovitis and osteomyelitis longer than, say, cellulitis?

Due to the avascular nature of the structures they affect

26

Why is the antibiotic course for osteomyelitis in particular so long?

Formation of sequestre (dead bone)
Turnover of new bone takes about 6 weeks (42 days)