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Flashcards in Streptococcus pyogenes, Group A Deck (9)
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1

Streptococcus pyogenes, group A are what kind of bacteria?

Gram-positive coccus in chains

2

Streptococcus pyogenes, group A have what type of colonies?

Beta hemolytic colonies- referred to as "group A beta Streptococcus" (consist of several antigenic types.

3

Streptococcus pyogenes, group A is the etiological agent of?

Skin & tissue infections
Necrotizing fasciitis
Acute exudative pharyngitis
Post streptococcal complications

4

Streptococcus pyogenes, group A examples of skin & tissue infections.

Impetigo
Cellulitis
Erysipelas
Along with Staphylococcus aureus causes about 90% of these skin infections.

5

What is Streptococcus pyogenes, group A scarlet fever?

Skin rash due to erythrogenic toxin. Ab to toxin prevents rash in future infections.

6

What are some examples of Streptococcus pyogenes, group A necrotizing fasciitis?

Streptococcal gangrene
Invasive cellulitis, "flesh eating bacteria"
Streptococcal Toxic Shock Syndrome

7

Streptococcus pyogenes, group A, Necrotizing fasciitis causes what invasion of the tissue?

Acute toxic and necrotic invasion of tissue- super- antigen effects.

8

Streptococcus pyogenes, group A, necrotizing fasciitis is characterized by what?

The rapid destruction of muscle and fat tissue with high fever and prominent pain; highly invasive and life threatening.

9

What is the treatment for Streptococcus pyogenes, group A, Necrotizing fasciitis?

Aggressive antimicrobic therapy (penicillin) and surgical intervention (debridement of affected tissue to remove toxin).