5 - Role of microbiology lab Flashcards

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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)
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2
Q

Define diplococci.

A

Pair of cocci bacteria

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3
Q

Define staphylococci.

A

Cluster of cocci bacteria

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4
Q

Define streptococci.

A

Chains of cocci bacteria

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5
Q

What are the different types of bacilli?

A
  • single rod
  • chain of rods
  • curved rod (vibrio)
  • spiral
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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
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7
Q

What colour do gram negative bacteria stain?

A

Light pink/don’t take up stain

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8
Q

What colour do gram positive bacteria stain?

A

Purple pink

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9
Q

What is the purpose of outbreak investigation?

A
  • determine source
  • determine strains
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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
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11
Q

What are examples of alert organisms?

A
  • MRSA
  • vancomycin-intermediate s. aureus
  • clostridium difficile
  • candida auris
  • COVID-19
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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
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13
Q

Who interprets microbiological data?

A
  • microbiologist
  • medical doctor
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