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Session Objective. CDC UpdateDisinfects Special Care Areas New ActivesGreen ProductsQuestions. To Clean or Not to Clean
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3. To Clean or Not to Clean……
4. Cross Contamination CDC
- Hard surfaces generally not directly associated with transmission of infections to staff or patients
- Hand contact with the surface
- Cleaning/disinfecting of surfaces is fundamental in prevention of healthcare associated infections
5. Degrees of Clean Environmental Cleaning
Sanitizing
Disinfecting
Sterilizing
6. Environmental Cleaning Basic Level of Clean
Can’t kill if you don’t clean
Removes many of microbes that are growing on or in soil
Does not control any one microbe
Recommend a general purpose cleaner
7. Importance of Cleaning Makes good business sense – dividends returned for investment in sanitation
- Furnishings last longer when properly cleaned
- Healthy environment
- Productive work area
- Safety
- Fire Prevention
- Public relations
- Improved customer relations
- Disinfectant (removal of gross soils required)
8. Disinfecting Patient contact surfaces, surgical & clinical surfaces, restrooms and nursing stations
Contains an active ingredient
One-Step (Cleans & Disinfects)
Kills microbes
Tested using AOAC Use Dilution Test
9. Sanitizing Used in foodservice areas
Clean first, rinse
Reduce bacteria to a safe level
WASH
RINSE
SANITIZE
AIR DRY
10. Sterilizing Highest level of clean
All organic & inorganic microorganisms and spores destroyed
Required for surgical instrumentation
Requires heat or extended contact with strong chemicals to control/kill microbes and spores
Not required for housekeeping procedures
11. Selection of Disinfectants Based on needs within facility
Judgment – guided by label
Medical devices regulated under FDA & EPA
AOAC Use Dilution Test
Hospital Grade Disinfectants
Shelf life of use-dilutions
12. Types of Disinfectants Quaternary Ammonium Compounds
Phenolic Compounds
Alcohols
Bleach
Iodophors
13. Quaternary Ammonium Compounds Advantages
Broad spectrum of kill
Excellent cleaner
Low cost
Low acute toxicity in use dilution
Hospital Grade Disinfectant – dependent upon formula & efficacy package
Technology readily available
Disadvantages
Does not Kill Tb
Effectiveness limited by presence of organic substances
Absorbed by cotton
Some quats limited by anionic cleaners
14. Phenolics Advantages
Effective against broad spectrum of microorganisms
Kills Tb
Low toxicity in use dilution Disadvantages
Poor cleaner – compatible with anionic detergents
Cannot be used in neonatal area
Inactivated by hard water & organic matter if not formulated properly
Residual film can accumulate on floors
Accurate dilution critical for germicidal activity
Skin depigmentation possible
15. Bleach Advantages
Inexpensive and readily available
Effective against a broad spectrum of micro-organisms Disadvantages
Inactivated by organic matter e.g. blood
Strong odor
Mixing of chlorine & ammonia based cleaning agents will emit highly toxic gas
Concentrations at >1:100 are corrosive to metals
Shelf life in diluted form is limited
Sensitive to heat & light
16. Alcohol Advantages
Broad spectrum of kill
Readily available
Dual use – antiseptic & disinfectant
Effective disinfectant for clinical tables, counters & medical equipment Disadvantages
Evaporates quickly – possible insufficient contact time
Can damage rubber & plastic
Volatile & flammable
17. Iodophors Advantages
Broad spectrum of kill
Time-sustained antimicrobial activity
Easily combined with detergents or other surfactants
Disadvantages
Fair to poor cleaners
Inactivated by presence of organic substances
Stains porous substrates
Can be irritating to eyes and throat
Potentially corrosive to metals
18. Selecting the Right Disinfectant Type of Soil
Some soils demand an acid type product (rust, lime scale, hard water deposits)
Some soils demand an alkaline product (grease, oil, protein, smoke)
Amount of soil
Surface to be Cleaned
Cleaner should be strong enough to remove soils
Pre-test in inconspicuous area
Pre-cleaning may be necessary
Method of Application
Review label
Spray, mop & bucket, equipment (automatic equipment)
Poured (Bowl Cleaners)
Proper Dilution Rate
Measuring device
Dispensing equipment
19. Understanding Disinfectants Different types of disinfectants
- high-level
- intermediate-level
- low-level
Decision must be made to match disinfectant and procedure to the task and to the microorganism
20. Levels of Disinfection High-level – sporicidal chemicals (glutaraldehyde, peracetic acid, hydrogen peroxide) not appropriate for use on housekeeping surfaces, can be highly toxic
Intermediate-level – Inactivates Tb (sodium hypochlorite (chlorine), alcohols, some phenolics & idophors)
Low-level – hospital disinfection w/o Tb claim
Antiseptics – FDA approved, not appropriate for use as environmental surface disinfectants
21. EMERGING DISEASES Tb
Bloodborne Pathogens
SARS
Avian Influenza
MRSA
VRE
C.Diff
22. Tuberculocidal Disinfectants Do not interrupt or prevent transmission of Tb
Not acquired from environmental surfaces
Benchmark
OSHA’s Bloodborne Pathogen
23. Bloodborne Pathogens No evidence that BBP has been transmitted from floor, wall or countertop
HIV & HBV readily inactivated with disinfectants including quats
Products to use
- Sodium Hypochlorite
- EPA registered product with Tb claim
- EPA registered product with both HIV and HBV
24. MRSA/VRE Antibiotic Resistant Organisms
- MRSA & VRE
- transmitted patient to patient
- indirectly hands of healthcare worker
- hand transfer from environmental surfaces & patient care equipment
- VRE can persist on dry surfaces from 7 days to 4 months
- VRE recovered from inoculated health worker’s hands (with or without gloves) for up to 60 minutes
- Control of MRSA, VRE, VISA
- Enforce hand washing and use of barrier precautions to minimize spread
- Cleaning of patient/resident rooms & medical equipment
- Routine cleaning with either low or intermediate disinfectant cleaners
- No need to increase dilutions of disinfectant cleaners
- Follow label directed use
25. Special Pathogens Clostridium Difficile
- Successful measure to control spread has been restriction of antimicrobial agents
- Little evidence especially housekeeping surfaces (floors, walls) that environment is direct source of infection
- Direct exposure to contaminated patient-care items (rectal thermometers)
- High-touch surfaces in patients’ bathrooms source of potential infection
- Most likely mechanism of exposure is healthcare workers hands
- Colonized patients may also service as a source for contamination
- Use of chlorine containing products showed reduction on environmental surfaces
- Recommendations for control - meticulous cleaning, followed by disinfection
26. Norovirus Norwalk Virus – Feline Calicivirus Family
Unable to grow Norwalk in Lab
Requires surrogate
EPA announces surrogate - 2004
27. Norwalk - Transmission Hands (39%)
Mouth (12%)
Air
Hard Surfaces
Food
Water
28. Critical Characteristics Highly contagious
Multiple modes of transmission
Stabile in the environment
Resistant to routine disinfection methods
Limited immunity
Asymptomatic
29. Routine Cleaning of Housekeeping Surfaces Regular cleaning is required
Use soap and water or a detergent/disinfectant
- Nature of surface
- type and degree of contamination
Surfaces can be divided into two categories
- Minimal hand contact – floors, walls
- Frequent hand contact – doorknobs, bedrails, switches, restroom areas (fixtures, walls around the stools)
30. What is “Bird Flu”, Avian Influenza? Causative agent: (Avian) Influenza A, subtype H5N1, a member of the family Orthomyxoviridae. www.fao.org/ag/againfo/subjects/en/health/diseases-cards/avian.html
Transmission: The virus is excreted from infected birds via feces, nasal or ocular discharge which then infects new birds via conjunctival, nares or the trachea. The virus has been isolated from feed, water and soil as a result of cross contamination. The virus has been transmitted to humans via direct handling of an infected bird or in contact with an infected farm. Airborne transmission is also a possibility. www.fao.org/ag/againfo/subjects/en/health/diseases-cards/avian.html
Stability: “The virus can survive for extended periods in the tissues and feces of infected birds. In water, the virus can survive for up to 4 days at 22 deg C and more than 30 days at 0 deg C.” www.who.int/csr/don/2004_01_22/en/
31. Regulatory Recommendations - WHO “Good hygiene practices during handling of poultry products, including hand washing, prevention of cross-contamination and thorough cooking (70 deg C).” www.who.int/csr/don/2004_01_24/en/
Stringent sanitary measures on the farm, including disinfection of contaminated farm equipment, transport vehicles, and cages. www.who.int/csr/don/2004_01_15/en/
“Quarantining infected farms, destruction of infected or potentially exposed flocks and feed.” www.who.int/csr/don/2004_01_15/en/
32. Recommendations for Avian Influenza Precautions:
Hand hygiene before and after patient contact or with items contaminated with respiratory secretions
Use gloves & gowns for patient contact
Use dedication equipment (blood pressure cuffs, disposal thermometers, etc.)
Wear eye protection within 3 ft of patient
Place patient in airborne isolation room (negative air handling) HEPA filters if negative air handling unavailable.
Use fit test respirator – NIOSH
Vaccination of Health-Care Workers with recent vaccine
33. Breaking the Chain through Effective Cleaning Use appropriate cleaner/disinfectant
Apply liberally
Give proper contact time
Shelf life of diluted products
Disinfect and clean equipment and receptacles (sharp, sanitary napkin, and trash containers)
Keep equipment clean (buckets, trigger spray bottles, dispensing equipment)
Dispose of contaminated cleaning materials
Clean frequently touched public surfaces
Keep pests and rodents out of your facility
Keep kitchen, refrigerators and all food contact surfaces cleaned and sanitized
34. Directions for use of disinfectant Use Product according to label
Contact times
Dilute accurately (more is not better)
Apply liberally
Surface should be visibly wet for recommended contact time
High soil loads may require precleaning
Soils provide food source
35. New Actives Drug Resistant Organisms
Shorter Contact Times
Rumblings in industry that microorganisms becoming resistant to quats
One product to do all
36. Hydrogen Peroxide Advantages
Can enhance removal of organic matter & microorganisms
No disposal issues
No odor or irritating fumes
At higher concentrates (1:16) – lower contact times Disadvantages
Incompatibility with some metals
Eye damage
High concentration required at end use dilution (1:16) for disinfecting
37. Peracetic Acid Advantages
Compatible with a wide variety of materials & instruments
Sporicidal properties
Rapid sterilization (30-45 minutes) Disadvantages
More expensive than high level disinfectants
Not compatible with aluminum
38. Silver Ion Formulated with Silver & Quat
Provides various contact times – 30 seconds to ten minutes
Residual – 24 hours
Ready to use
39. Looking Ahead Key People in the industry and academia are saying “the future of cleaners will be in non-halogen based oxidizers.”
What are the desired traits in these futuristic cleaners?
40. Desired Traits Non-toxic to humans & animals
Non-allergenic & non-sensitizing
Non-hormone disrupting
Environmentally sound
Low Volatile Organic Compounds (VOC)
Longer shelf life
Safe to transport
Safe and easy to store
Non-corrosive
Compatible with today’s and tomorrow’s new materials (flooring, countertops, plastics, equipment, etc)
41. On-Going Innovation Higher concentrations
Use more of less
Products that are safe to the environment
Green Seal certified products
Little or no impact on the environment or indoor air quality
Less hazardous to people
- Products with little to no impact on human health
- Dispensing systems – no contact with concentrated chemicals
More synergistic actives
Improved performance
Performs multiple cleaning processes in one step
42. What’s Next Cleaning trends are moving towards minimization:
- Products will be required to perform multiple tasks
- Little or no impact on the environment, animals or humans
- Automated cleaning systems
- Programmed to clean at specific times
- Detection of soiled surfaces
- Self-cleaning surfaces that degrade soils or prevent soil from adhering
43. Disinfectant Product Labels EPA Registration Number
Label Claims
Actives
Product Uses
Test Method
Contact Time
44. Handwashing Is important to prevent spread of disease
Wash hands frequently with soap and water
Use alcohol-based handrubs when hands are not visibly soiled
Wash hands for 15-20 seconds
Wash hands after removing gloves
Dispose of gloves
Reusable gloves – follow facility guidelines
45. Carpeting ADVANTAGES
Noise Reduction
Humanizing
Contributes to reduction of falls
46. Carpeting DISADVANTAGES
Difficult to keep clean (spills)
Harder to push equipment (wheelchairs, carts, gurneys)
Increased activity levels increase bacteria counts
47. Carpeting Despite bacterial growth –
“little epidemiologic evidence to show that carpets influence healthcare-associated infection rates in areas housing immunocompetent patients”
“Guideline includes no recommendations against the use of carpeting in these areas”
48. Carpet Maintenance Care to prevent dispersal of carpet microorganisms into the air
- maintain equipment
- use of HEPTA filters in high-risk patient-care areas
- carpet cleaning chemicals
- powder & liquids
- TOTAL PROGRAM REQUIRED
49. Mold & Mildew Conditions
Remove source
Products available
Construction
50. Microfiber Blend of microscopic polyester and polyamide fibers
Due to fine filaments the microfiber loosens dirt even in the smallest structures (mechanical action)
Capillary force of the micro fiber textile absorbs large amounts of loose dirt and/or soiled solution
51. Microfiber Advantages Reduce chemical use and disposal
Reduce cleaning times for patient rooms or other high use areas
Prevents dirty mop heads from contaminating clean solutions
Cleans – removes soils that microorganisms feed on
Clean solution each time tool/microfiber pad is used
52. Wipes Require EPA registration
Wet Task System
Shelf life