INFECTION PREVENTION Created by St. Joseph’s Medical Center Modified by Mark Twain St. Joseph’s...
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INFECTION PREVENTION
Created by St. Joseph’s Medical Center
Modified by Mark Twain St. Joseph’s Hospital
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Objectives
• Describe the role of microorganisms in disease
• Describe how microorganisms are transmitted
• Describe proper hand washing techniques
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Microorganism: an organism that is microscopic (usually too small to be seen by the naked human eye). Includes:
»Bacteria
»Fungi
»Viruses
»Parasites
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NORMAL FLORA• Microorganisms (usually bacteria) that are found
on healthy human body surfaces• Each body site has its own normal flora
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• Normal flora can cause infection if numbers are high or host is compromised
• A pathogenic microorganism is capable of causing disease.
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COLONIZATION vs INFECTION
• Colonization occurs when microorganisms inhabit a specific body site (such as the skin) but don't cause signs and symptoms of infection
• Infection is clinical signs of illness or inflammation (e.g., localized pain/tenderness, redness, warmth, swelling; pus; fever) due to tissue damage caused by invasion by the microorganism
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Causative Agent
Chain of Chain of InfectionInfection
Susceptible Host(age, chronic illness)
Causative Agent(fungus, virus,bacteria)
Reservoir(people, equipment, water, food)
Exit Portal(excretions, secretions, blood) Mode of
Transmission(contact, airborne, vehicle, vector)
Entry Portal (respiratory, GI,mucus membranes, broken skin)
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How Are Microorganisms Transmitted?
• Airborne
• Contact
• Droplet
• Ingestion
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How do we prevent transmission of
microorganisms?
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Through Asepsis
Aseptic Technique: Methods by which microbial contamination is prevented in the environment
• Reducing the number of microbes to the lowest possible number
• Purposefully preventing the transfer of microbes from one person to another
• Keeping your environment clean• Frequent hand washing
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Cornerstones of Medical Asepsis
• Know what is dirty
• Know what is clean
• Know what is sterile
• Eliminate contamination immediately
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Key Definitions
• Cleaning – Remove residues, dirt and other contamination
Disinfection - The process of microbial inactivation that eliminates virtually all recognized pathogenic microorganisms, but not necessarily all microbial forms (e.g., spores)
Sterilization - The use of physical or chemical procedures to destroy all microbial life.
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Is the single most effective method of preventing the spread of microorganisms
Can reduce infections by 50%
Costs almost nothing!
Hand HygieneHand Hygiene
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Hand WashingHand Washing
Remove all jewelry
Use soap and warm water
Lather and scrub briskly for 15 seconds under nails around cuticles between fingers in folds of wrist
Dry thoroughly
Use paper towel to turn off faucet
Always wash with soap and water when hands are visibly soiled.
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Hand Sanitizer
It’s as easy as 1, 2, 3…
1. Apply handrub to palm of one hand.
2. Rub hands together covering all surfaces of hand and fingers.
3. Rub until handrub is absorbed.
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When to Wash or Sanitize Your HandsWhen to Wash or Sanitize Your Hands
• When you get home from school, work or shopping
• Before & after eating, drinking, or smoking • After touching your pets
• After touching any contaminated item or surface
• After blowing your nose, using the restroom, fixing your hair, etc.
• Any time you think your hands are dirty• Before and after changing a diaper
• Use alcohol hand rubs when washing your hands is inconvenient and they are not visibly soiled.
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• To wash your hands frequently
• To get appropriate immunizations
• To practice respiratory etiquette
• Don’t go to work sick
• Don’t send your kids to school sick
And Don’t Forget: