PRELIMS WEEK 2 Flashcards

1
Q

Community of microorganism

A

biofilms

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2
Q

A critical place where biofilms are seen in the hospital is on?

A

catheters

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3
Q

• The most resistant to the actions of heat, chemicals and
radiation.
• Naked pieces of protein

A

prions

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4
Q

It can withstand temperatures exceeding 121 degrees Celsius for several hours while immersed in acid or basic solutions

A

prions

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5
Q

Most common staining method in endospores/sore formers

A

Schaeffer-Fulton Method

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6
Q

• They are mycolic acid found on their on a cell wall so they can’t be stained by simple water base like your graft stain

A

acid fast organism

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7
Q

The two most effective alcohols used in hospitals for disinfection purposes are

A

ethyl alcohol and isopropyl alcohol

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8
Q

• Are materials that invade sterile tissues or enter the
vascular system.
• Needs sterilization

A

critical

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9
Q

heat ! method that Sterilizes and kills endospores

A

autoclave (121.6 deg Celsius; 15mins at 15psi)

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10
Q

Disinfects and kills milk-borne pathogens and vegetable forms; endospores survive

A

pasteurization batch method (30mins)

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11
Q

• The most effective method of moist heat sterilization
• It can destroy the spore formers
• Comes into different size and shape

A

autoclaving

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12
Q

Bacillus subtilis, lactobacillus acidophiles are infective microorganism under what risk group?

A

risk 1

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13
Q

E.Coli, Salmonella
what risk group?

A

risk 2

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14
Q

• High individual risk, low community risk

A

risk 3

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15
Q

B. Subtilis, Naegleria gruberi and M. gordonae can be handled at what biosafety level?

A

BSlevel 1

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16
Q

• For handling common or likely encountered pathogens in a
routine clinical laboratory
• Eg. HBV, HIV, Staphylococcus and Enteric Pathogens, B.
anthracis and Y. Pestis

A

bsl2

17
Q

• For suspected of uncommon viruses and organisms that
can be transmitted by aerosols (M. tb and systematic fungi)
• Eg. Francis and Bruce

A

bsl 3