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Flashcards in Fungal Deck (15)
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1
Q

Describe Staph sp.

A

Gram +ve cocci in clusters

Aerobic + facultatively anaerobic

2
Q

What are the two types of Staph

A
  1. Staph. aureus (coagulase +ve)

2. Coagulase -ve Staph.

3
Q

What can STaph. saprophyticus cause?

A

UTI

4
Q

Describe Streptococcus species

A

Gram +ve cocci in chains (strips)

Aerobic (and facultatively anaerobic)

5
Q

Descibe the classification of haemolysis on blood agar

A

beta - haemolytic (complete)
alpha - haemolytic (partial)
gamma - non-haemolytic (none)

6
Q

Describe a and b beta-haemolytic Strep.

A

A) throat, severe skin infections

B) menigitis in neonates

7
Q

Name 2 categories of alpha-haemolytic strep.

A

Strep. pneumoniae - pathogen, commonest cause of pneumonia

Strep. viridans - commensals of mouth, throat, vagina (rare)

8
Q

Whats a common commensal of bowel and UTI?

A

Enterococcus species (E.faecalis etc.)

9
Q

What is sebum and what does it do?

A

fatty acids, inhibits bacterial growth

10
Q

What can Staph. aureus cause?

A

Cellulitis, infected eczema, impetigo, wound infection, staphylococcal

11
Q

What can Strep. pyogenes cause?

A

Infected eczema, impetigo, cellulitis, erysipelas, necrotising fascitis

12
Q

How do you treat Staph aureus?

A

Flucloxacillin

13
Q

Strep. pyogenes is treated by?

A

Penicillin + flucloxacillin

14
Q

What is type 1 necrotising faciitis?

A

mixed anaerobes & coliforms, usually post-abdominal surgery

15
Q

Type 2 necrotising faciitis?

A

Group A strep infection