5 - Role of microbiology lab Flashcards
1
Q
What is the role of a microbiology lab?
A
- diagnose infection in an individual patient for management (clinical)
- support infection prevention and control in searching for source/route of transmission of HAI (epidemiological)
2
Q
Define diplococci.
A
Pair of cocci bacteria
3
Q
Define staphylococci.
A
Cluster of cocci bacteria
4
Q
Define streptococci.
A
Chains of cocci bacteria
5
Q
What are the different types of bacilli?
A
- single rod
- chain of rods
- curved rod (vibrio)
- spiral
6
Q
What is the difference between a gram negative and gram positive cell?
A
- cell wall composition
- gram positive cells are surrounded by a thick layer of peptidoglycan
- gram negative cells have two membranes separated by peptidoglycan and lipoproteins, the outer membranes contain LPS
7
Q
What colour do gram negative bacteria stain?
A
Light pink/don’t take up stain
8
Q
What colour do gram positive bacteria stain?
A
Purple pink
9
Q
What is the purpose of outbreak investigation?
A
- determine source
- determine strains
10
Q
What is the purpose of HAI surveillance?
A
- allows IP&C to create guidance and put control methods in place
- basline incidence can be established
11
Q
What are examples of alert organisms?
A
- MRSA
- vancomycin-intermediate s. aureus
- clostridium difficile
- candida auris
- COVID-19
12
Q
What is antibiotic policy?
A
- reports published based on changing resistance patterns
- ensures antibiotics are reserved for actual need, not used as first option
13
Q
Who interprets microbiological data?
A
- microbiologist
- medical doctor
