Ht040 - Skin Infections

Front 1

Name the 4 pathogenic mechanisms for skin infections

Back 1

a) Direct bacterial invasion
b) Hematogenous spread
c) Toxigenic
d) Hypersensitivity rxns (immune complexes)

Front 2

Name the 5 kinds of superficial/shallow skin infections

Back 2

1) Impetigo
2) Ecthyma
3) Folliculitis
4) Furuncles/carbuncles
5) Paronychia

Front 3

Name 5 kinds of deep skin infections

Back 3

1) Cellulitis
2) Lymphangitis
3) Traumatic infections
4) Progressive, severe
5) Erysipelas

Front 4

Etiologic agent/s and tx for impetigo

Back 4

-Strep pyo
-Staph aureus (bullous impetigo)
-Tx: Topical management

Front 5

Etiologic agent and tx for erysipelas

Back 5

-Strep pyo
-Tx: Parenteral penicillin (why? --> Involves horizontal spread to lymphatics)

Front 6

Etiologic agent and tx for cellulitis

Back 6

-Strep pyo
-Staph aureus
-H. flu (in unimmunized kids)
-Tx: systemic antibiotics (parenteral)

Front 7

4 kinds of progressive, severe skin infections

Back 7

1) Streptococcal gangrene (toxic strep syndrome)
2) Clostridial infections
3) Necrotizing fasciitis
4) Progressive synergistic bacterial gangrene

Front 8

Etiology/anatomy/clinical features/tx of:
Streptococcal gangrene

Back 8

Etiology: Group A strep
Anatomy: Deep cellulitis, arterial & venous thromboses
Clinical: Severe local pain/systemic toxicity
Tx: Penicillin, surgical debridement