Infections of the skin, muscles and soft tissues

Question 1

Dermal anatomy and the risk of specific infections

Answer 1

Question 2

Infections associated with vesicles

Answer 2

Question 3

difference between SSSS and TEN

Answer 3

cleavage plane:

SSSS- stratum corneum
TEN - stratum germinativum

Question 4

infections associated with bullae

Answer 4

Question 5

Infections associated with crust

Answer 5

Question 6

Etiologies of folliculitis

Answer 6

Question 7

Infections associated with
popular and nodular lesions

Answer 7

Question 8

Infections associated with
ulcerations

Answer 8

Question 9

lesion in secondary vs tertiary syphilis

Answer 9

Secondary syphilis - flat papulosquamous lesions

Tertiary syphilis - large nodules or gummas

Question 10

due to tissue hypoxemia secondary to pressure-induced vascular insufficiency and may become secondarily infected with components of skin GI flora

Answer 10

Decubitus ulcers

Question 11

etiologic agent of erysipelas

Answer 11

S. pyogenes

Question 12

Distinctive feature of erysipelas

Answer 12

well-defined indurated margins, particularly along the nasolabial fold, rapid progression and intense pain

Question 13

Treatment of erysipelas

Answer 13

Penicilllin

Question 14

an acute inflammatory condition of the skin characterized by localized pain, erythema, swelling and heat

Answer 14

Cellulitis

Question 15

Purulent cellulitis

Answer 15

Infections caused by MRSA /MSSA

Question 16

Non purulent cellulitis

Answer 16

Infections caused by S. pyogenes
-more rapidly spreading, diffuse process and is frequently associated with lymphangitis and fever

Question 17

cellulitis that occurs primarily in elderly patients and those with DM or peripheral vascular disease

Answer 17

Streptococcus agalactiae cellulitis

Question 18

cellulitis that causes periorbital cellulitis in children in association with sinusitis, otitis media, or epiglottis

Answer 18

Haemophilus influenza

Question 19

Treatment of choice for animal or human bite infections

Answer 19

Amoxicillin-clavulanate
Ampicillin-sulbactam
Cefoxitin

Question 20

Three types of soft tissue infection caused by P. aeroginosa

Answer 20

1. Ecthyma gangrenosum in neutropenic patients
2. Hot-tub folliculitis
3. Cellulitis following penetrating injury

Question 21

Etiologic agents of necrotizing fascitis

Answer 21

Question 22

hallmark of pleurodynia (coxsackievirus B), trichinellosis, and bacterial infection

Answer 22

Severe muscle pain

Question 23

usually follows severe penetrating injuries that result in interruption of the blood supply and introduction of soil into the wounds

Answer 23

Gas gangrene

Question 24

a variant of necrotizing fascitis caused by mixed aerobic and anaerobic bacteria with exclusion of clostridial organisms

Answer 24

Synergistic nonclostridial anaerobic myonecrosis

Question 25

Treatment of common infections of the skin

Answer 25

Question 26

Reasons for early and aggressive surgical exploration of suspected necrotizing fascitis, myositis and gangrene

Answer 26

1. Visualize deep structures
2. Remove necrotic tissue
3. Reduce compartment pressure
4. Obtain suitable material for Gram’s staining and for aerobic and anaerobic cultures

Question 27

duration of antibiotic treatment

Answer 27

should be continued until all signs of systemic toxicity have resolved, all devitalized tissue has been removed, and granulation tissue has developed