# 10 Environmental Infection Control Flashcards

1
Q

What does Environmental infection control consist of?

A

1) Managing contamination of surfaces

2) Proper handing & disposal of medical waste

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2
Q

What are the CLINICAL CONTACT SURFACES?

A
  • Directly touched

- Barriers/Clean & Disinfect

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3
Q

What are the HOUSEKEEPING SURFACES?

A
  • Walls, floors, office furniture

- Requires regular cleaning

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4
Q

What are 2 ways you can take control?

A

1) Protect yourself

2) Always use appropriate PPE when performing cleaning and disinfection procedures

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5
Q

What are some clinical contact surfaces that may be DIRECTLY CONTACTED by contaminated instruments devices, gloves or hands?

A
  • Light handles,
  • Xrays equipment
  • Reusable container of renal materials
  • countertops
  • pencils
  • cell phones
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6
Q

When should Dental Units be cleaned and disinfected?

A

AT the BEGINNING of EVERY DAY, at the END of every day and in BETWEEN patients if barriers are compromised or surfaces are contaminated

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7
Q

What are the steps for Surface Disinfection of the Dental Units?

A

1) Don Appropriate PPE
2) Select surface disinfectant

3) CLEAN surface/WIPE (1-3 min)
- Remove soil, and dirt

4) Disinfect surface/allow surface to remain moist for contact time stated by manufac.
5) WIPE surface DRY

6) No SPRAY/WIPE/SPRAY
(b/c of mist in the air–aerosols)

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8
Q

Cover all ______________ surfaces with a barrier wrap.

A

ALL CLINICAL CONTACT SURFACES

Wrap plastic w/ clean hands

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9
Q

What should you do in between patients?

A
  • Wear gloves, gowns, when removing barriers after treatment
  • Use care not to contaminate surface underneath (if contaminated, clean & disinfect before wrapping)
  • Discard used covers in trash
  • Remove & discard gloves, wash hands, and apply fresh covers w/ clean hands
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10
Q

What re the housekeeping surfaces?

A

-Surfaces that rewire regular cleaning to remove SOIL and DUST

  • AVOID use of carpet & fabric in dental operators
  • Diverse population of microbes thrive in BOTH
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11
Q

What are (4) Surface Disinfectants?

A

1) Chloride-Based produces
- chlorine dioxide or sodium hypochlorite

2) Phenolic Solutions
- phenol, phenyl, phenate and amylphenol

3) Iodophors & Iodine based solutions
4) Quaternary ammonium compounds

Note: Use utility gloves and make sure it is TB Tuberculocidal to kill TB

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12
Q

What does a low, intermediate, and high level of disinfectant do?

A

Low= KILLS microorganisms

  • **Intermediate= Tuberculocidal
    (recommendation)

High= DESTROYS ALL MICROBES but not necessarily HIGH #’s of bacterial spores

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13
Q

What are the General Recommendations for cleaning/disinfection process?

A
  • Physical removal of microbes by cleaning
  • Follow manufacturer’s instructions for proper use of EPA registered hospital disinfectants
  • DONT use sterilant/high-level disinfectants on environmental surfaces
  • Use appropriate precautions (e.g utility gloves, mask, eyewear) when cleaning & disinfecting environment surfaces
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14
Q

What are the choices for the Environmental surface asepsis?

A

1) Disposable covers

2) Spray-Wipe-Sprary
(liquid cleaners & disinfectants)

3) Wipe-discard-wipe
(disposable disinfectant wipes)

Note: Just Pick 2!

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15
Q

What is the Disinfectant Guide?

A
  • There are acceptable disinfectant agent choices
  • No single chemical may satisfy all disinfection requirements in a given practice
  • Consideration of multiple factors is important
  • Degree of anti-microbial killing required
  • Nature of surface/item to be treated
  • Cost, safety, and ease of produce use

-Selection of 1 produce w/ a HIGHER POTENCY to cover all situations may be more convenient

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16
Q

What are the ADVANTAGES of Chemical Disinfectants: Alcohols

A

1) Rapidy bactericidal
2) Good antiseptic & disinfectant activity
3) Denatures & dehydrates microbe proteins
4) Tuberculocidal & virucidal
5) Only slightly irritating
6) Historical perception
7) Economical

17
Q

What are the DISADVANTAGES Disinfectants: Alcohols

A

1) Not sporicidal
2) Diminished activity with biodurden
3) Damage to materials
4) Rapid evaporation rate
5) Not recommended for use by itself

18
Q

What are the Chemical Disinfectants: Quaternary Ammoniums? ADVANTAGES?

A

1) Cationic detergents- serve as good cleaning agents
2) Alter microbial cell membrane permeability
3) Rapidly bactericidal against gram + bacteria
4) ONLY slightly irritating low tissue toxicity
5) Economical

19
Q

What are the Chemical Disinfectants: Quaternary Ammoniums? DISADVANTAGES?

A

1) Not tuberculocidal, sporicidal, or virucidal against many hydrophilic viruses
2) Many bacteriostatic
3) Inactivated by anionic detergents (soaps)
4) Inactivated by organic matter
5) Evidence suggesting variable activity against gram - bacteria
6) Not recommended for use by themselves

20
Q

What are the Chemical Disinfectants: Hypochlorites, ADVANTAGES?

A

1) Rapid antimicorbial action
2) Acts as oxidation as hypochlorous acid–potent germicide
3) Good cleaning agent
4) Broad spectrum: uberculocidal, sporicidal, or virucidal (intermediate- level)
5) Effective in dilute soon (1:100 dilution in water)
6) Economical

21
Q

What are the Chemical Disinfectants: Hypochlorites, DISADVANTAGES?

A

1) Chemically unstable solution
2) Prepare fresh daily (some available products now premixed)
3) Diminshed activity w/ bioburden presence
4) Unpleasant odor at 1:100 dilution
5) Irritating to tissues
6) Corrosive metals
7) Damaging to clothing
8) Degrading to plastics & rubber

22
Q

What are the forms of Iodine & Iodophors?

A

-Excellent anti-microbial in LOW concentrations(effective in historical effectiveness in medicine)

  • tincture: idoine salts dissolved in alcohol
  • irritating, allergenic, corrosion; stains skin clothing

*Iodophor: iodine + water soluble carrier
stabilizes the iodine w/ slow release of halogen from carrier molecule to tissues
-Minimizes toxicity effects

23
Q

What are the Chemical Disinfectants: Iodophors ADVANTAGES?

A

1) Rapid antimicrob acitvity
2) Broad spectrum
3) Tuberculcidal & virucidal
4) effective in dilute soln
5) surfactant carrier maintains surface moistness
6) residual anti-microbial activity after drying

24
Q

What are the Chemical Disinfectants: Iodophors DISADVANTAGES?

A

1) Not sporicidal
2) Unstable @ high temps
3) dilution & contact time = critical for activity
4) daily preparation
5) Discoloration of some environmental surfaces
6) rust inhibitor
7) inactivated by hard water

25
Q

What are the ADVANTAGES of Synthetic Phenols?

A

1) Contain 2 or 3 phenolics
2) Broad spectrum
3) Effective in dilute soln
4) Useful on most environmental surfaces
5) Effective in presence of detergents
6) Some evidence of residual biocidal activity
7) Economical

26
Q

What are the DISADVANTAGES of Synthetic Phenols?

A

1) NOT SPORICIDAL
2) Some solns have short use LIFE
3) Can to degrade certain plastics, & etch glass w/prolonged exposure
4) Film accumulation
5) Difficult to rinse off certain materials
6) Skin & eye irritation with misuse

27
Q

What is Disinfection?

A
  • Differs from sterilization by its LACK of SPORICIDAL POWER
  • Levels of disinfection: High, intermediate and low.

**Environmental surfaces ONLY need LOW to Intermediate level

28
Q

What do WE USE?

A

-CAVICIDE
-Surface disinfectants
-MSDS
-

29
Q

What is Medical REGULATED WASTE?

A

1) Sharps
2) Blood & Blood saturated waste
3) Pathological waste

30
Q

What is Medical UNREGULATED WASTE?

A

1) Bibs
2) Gowns
3) Barrier wraps

31
Q

How do were manage Medical Waste?

A

1) Biohazard bags

2) Sharps in biohazard container
- Keep at point of use, no needle manipulation, never overfill.

3) Extracted teeth

Note: Federal, state & local regulations outline requirements for Tx & disposal

32
Q

How should we dispose extracted teeth?

A
  • Yes, it can be used for education but sterilized (careful w/ amalgam when autoclaving as it will give off fumes)
  • You can give pt tooth back (sterilize it)