Staphylococci Flashcards
1
Q
Explain Staphlylococci traits
A
- Gram positive
- Non motile cocci (>30 species)
2
Q
How does Staphlococci contrast to streptococcus
A
- Staphlococci = clusters like bunch of grapes, catalase positive
- Streptococcus = chains, catalase negative
3
Q
Staphylococcus aureus features
A
- B hemolytic
- Coagulase positive
4
Q
What is Staphlococcus aureus?
A
- Gram-positive spherically shaped bacterium
- frequently found in the upper respiratory tract on the skin
5
Q
What does Staphylococcus aureus cause in new born?
A
- Pneumonia and septicaemia
6
Q
Staph. aureus is a common _____ infection
A
- Skin
7
Q
What does Staph. aureus cause?
A
- Pneumonia and septicaemia
- Skin infection
- Septic arthritis
- Osteomyelitis
-Endocarditis - Wound infections, absesses
8
Q
What is septic arthritis?
A
- Damage and infection of the joint
- Can cause a lot of tissue damage to the bones and cartilage
9
Q
In septic arthritis, how does bacteria get into the joint?
A
- via the blood stream
- From an injury that cuts into the joint
- During surgery
10
Q
What is Osteomyelitis?
A
- infection of the bone itself
- Bacteria has seeded into the bone instead of the joint
11
Q
What is Hematogenous osteomyelitis
A
- bacteria is also in the blood, common in children
12
Q
What is Endocarditis
A
- inflammation inside heart tissues and valves
13
Q
What is Scalded skin syndrome (SSS)
A
- Initial infection in the mouth, nasal cavities, throat or umbilicus
- A lytic toxin is produced which affects the skin at remote sites leading to desquamation
14
Q
who tends to have scalded skin syndrome
A
- Mostly young children particularly neonates
15
Q
How long does it take SSS to heal
A
- heals in a matter of weeks
