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Flashcards in Staph and Strep Deck (115)
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1

Describe the physical structure of Staphylococci?

G+ cocci in clusters

2

What is the catalase sensitivity of Staphylococci?

Catalase +

3

How does Staphylococci feel about salt?

Tolerant, grow up to 9%

4

What two factors are used to differentiate Staphylococci?

Hemolysis
Coagulase

5

Clinical presentations of Staphylococcus Aureus caused mainly by bacterial growth?

Fununcles
Folliculitis
Non-bullous impetigo
Bacteremia/Wound Infections

6

How are furuncles walled off?

Coagulase

7

What is Staphylococcus Aureus folliculitis associated with?

Shaving
Contact with Fomite
Complication of Acne

8

Primary cause of acne?

Proprionibacterium acnes

9

What is non-bullus impetigo?

Infection is the superficial epidermis
Most Common Bacterial Skin Disease
Crusted Blisters

10

Who usually gets non-bullus impetigo?

Children and Teens

11

Two most frequent causes of non-bullus impetigo?

Staphylococcus Aureus
Strep -- Group A

12

Staphylococcus Aureus bacteremis/wound infection is a major concern in...

Surgical wounds
Esp. deep incisions that go into muscle, or organ space

13

Clinical presentations of Staphylococcus Aureus typically associated with exotoxin release.

Bullous exfoliation
Bullous impetigo

14

What is Bullous exfoliation?

Staphylococcal scalded skin syndrome
Intraepidermal splitting and peeling of top layers

15

Who gets bullous exfoliation?

Mostly Children

16

Prognosis of Staphylococcus Aureus bullous exfoliation in kids? adults?

Kids -- Good Prognosis
Adults -- Bad -- Indicates Bacteremia

17

What is Staphylococcus Aureus bullous impetigo?

Fluid filled blisters within the epidermis
Painful

18

Who gets Staphylococcus Aureus bullous impetigo?

Kids under 2 years old

19

Cause of Staphylococcus Aureus bullous impetigo?

Exfoliative Toxin

20

What is a Staphylococcus Aureus bully?

A fluid filled blister in the epidermis

21

Clinical presentation of Toxic Shock Syndrome?

Abrupt onset fever
Rash with desquamination
Hypotension
Multisystem, DIC

22

Two types of Toxic Shock Syndrome?

Menstrual and Nonmen (M&F-often nosocomial)

23

Cause of Toxic Shock Syndrome?

TSST triggers immune rxn

24

Clinical presentation of Staphylococcus Aureus food poisoning?

Violent Nausea, Vomiting, Diarrhea
NO Fever
VERY quick (gone within 24)

25

Food poisoning in which you see more vomiting than diarrhea? (3)

B cereus
Staphylococcus Aureus
Norovirus

26

Why is there a different presentation of Toxic Shock and Food Poisoning.

You have lots of Tregs in the gut and few in the bloodstream

27

Typical clinical presentation of Staphylococcus epidermis?

Nosocomial Infections, esp. in surgery
Biofilm Formation

28

Typical clinical presentation of Staphylococcus saprophyticus?

UTI in young women
(Has specific adhesion for UT epithelia)

29

Menstrual TSS is associated with...

Retained tampons

30

Why can't you eradicate Staphylococcus?

Its a part of the normal flora