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Dental Hygiene: Theory & Practice > Infection Control > Flashcards

Infection Control Flashcards

1
Q

What is the sequence for donning PPE?

A
  1. Hand hygiene
  2. Gown
  3. Mask
  4. Eyewear
  5. Gloves
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2
Q

What is the wipe-discard-wipe method for?

A

Pre cleaning and disinfecting

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3
Q

How long are the water lines purged for at the beginning and end of the day?

A

Beginning: 2 minutes
End: 30 seconds

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4
Q

If the area underneath a barrier has not been compromised and a barrier falls off, what do we do?

A

We can simply rebarrier

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5
Q

How long should we wait before breaking down the unit when aerosols have been created?

A

15 minutes

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6
Q

Critical

A

penetrates soft tissue or bone
-must be sterilized
-ex// needles, curettes, explorers, probes

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7
Q

Semi-critical

A

touches intact mucous membrane and oral fluids
-sterilize or high level disinfection
-ex// biteblocks, mirror, ultrasonic hand piece

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8
Q

Noncritical

A

does not touch mucous membranes
-intermediate disinfection
-ex// light handles, eyewear

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9
Q

Environmental

A

no contact with patient surfaces
-low to intermediate disinfection
-ex// countertops, equipment surfaces

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10
Q

High level disinfectants

A

destroys all microorganisms but may not destroy high numbers of bacteria spores

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11
Q

Intermediate level disinfectants

A

destroys vegetative bacteria, viruses, and fungi. Registered by the EPA as tuberculocidal

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12
Q

Low level disinfectants

A

destroys vegetative bacteria, some fungi, viruses, and is not tuberculocidal.

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13
Q

List the information provided by the SDS sheet of a product

A
  1. Effectiveness and stability
  2. Directions regarding activation
  3. Storage
  4. Directions for use
  5. Disposal
  6. Warnings
  7. Toxicity
  8. Directions for emergency care
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14
Q

How is disinfection achieved? (What is the principal of action)

A
  1. coagulation, precipitation, and the oxidation of proteins in the microbial cells
  2. Denaturarion of the enzymes
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15
Q

List the properties of a disinfectant

A
  1. Broad spectrum
  2. Fast acting
  3. No affect by physical factors
  4. Nontoxic
  5. Surface comparability
  6. Residual effect on treated surfaces
  7. Easy to use
  8. Odorless
  9. Economical
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16
Q

What are the 3 types of hand hygiene?

A

Antiseptic hand wash: 20 sec w/ antimicrobial soap
Antiseptic hand rub: alcohol based 60-95% ethanol *non soiled hands
Surgical antisepsis: 2-6 minutes

17
Q

What level of mask is mandatory in our clinic?

A

Level 3

18
Q

What does BFE stand for?

A

Bacterial filtration efficiency

19
Q

When do masks have to be changed?

A
  • each hour
  • each new patient
  • when the mask becomes wet/soiled
20
Q

We purge the water line to prevent which bacteria?

A

Psuedomonas aeruginosa

21
Q

What are the requirements for the pre-procedural mouth rinse?

A

10mL of Listerine for 1 minute

22
Q

List the types of sterilization

A
  • steam under pressure (autoclave)
  • dry heat
  • chemical vapor
  • immediate sterilization (flash)
  • chemical (cold **not recommended)
23
Q

Midmark 9 (autoclave)

A

250 degrees for 15-30 min (*plastic side up)

24
Q

Statim (autoclave)

A

273 degrees for 4-10 min (**plastic side up)

25
Q

What are the advantages and disadvantages of moist heat/steam under pressure sterilization (autoclaving)?

A

Advantages
-economical
-efficient
Disadvantages
-corrosion of non stainless steel
-dulling of instruments

26
Q

Prevacuum (Class B sterilizer)

A

vacuum created to inject steam
279 degrees
3.5-10 minutes
20 minute drying cycle

27
Q

Unsaturated chemical vapor sterilizer

A

chemical vapor instead of steam
20 minutes at 270 degrees

28
Q

What are the advantages and disadvantages of chemical vapor sterilization?

A

Advantages
-time efficient
-decreased corrosion
Disadvantages
-special solutions required
-odor (needs adequate ventilation)
-can damage plastic

29
Q

Dry heat sterilization

A

high heat
320 degrees for 120 minutes
good for dental hand pieces and some plastics

30
Q

What are the advantages and disadvantages of dry heat sterilization?

A

Advantage
-no corrosion
Disadvantages
-prolonged exposure time
-high heat necessary

31
Q

List the daily chemical indicator classes

A

Class 1 (external)
Class 2 (Bowie Dick test)
Class 3 (single internal)

32
Q

List the multiparameter indicator (integrators) classes

A

Class 4 (test more than 2 parameters)
Class 5 or 6 (biological, three parameters and/or spore test

33
Q

How do the weekly (biological) spore tests work?

A

-vial/ampule/strip with Geobacillus or Bacillus steam autoclaves
-dry heat: Bacillus strips
-chemical vapor: Geobacillus strips
two positives=pull machine out of use for repair

34
Q

What is wicking?

A

When the bag that instruments have been sterilized in is damp, which allows bacteria to potential contaminant the instruments

Dental Hygiene: Theory & Practice (12 decks)

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