Transcript Basic Principles of Medical Asepsis

Chapter 1
Asepsis and Infection Control
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Infection Control Measures
• Identifying the infection
• Preventing infection
– Breaking the chain of infection
• Controlling infection
– Minimizing complications
– Reducing adverse outcomes
• Teaching the patient about infection
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Practice of Asepsis
• Medical asepsis (clean technique)
– Involves procedures and practices that reduce the
number and transfer of pathogens
• For example, performing hand hygiene and
wearing gloves
• Surgical asepsis (sterile technique)
– Includes practices used to render and keep objects
and areas free from microorganisms
• For example, inserting an indwelling urinary
catheter or inserting an intravenous catheter
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Question
For what patient care would the nurse use surgical asepsis?
A. Administering medications
B. Inserting an IV catheter
C. Providing a bed bath
D. Changing the linens on a bed
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Answer
B. Inserting an IV catheter
Rationale: Surgical asepsis, or sterile technique, includes
practices used to render and keep objects and areas free
from microorganisms. Procedures requiring surgical asepsis
include inserting an indwelling urinary catheter or inserting
an intravenous catheter. Medical asepsis, or clean
technique, involves procedures and practices that reduce
the number and transfer of pathogens, such as performing
hand hygiene and wearing gloves.
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Skills to Assist in Preventing the Spread
of Infection
• Performing hand hygiene
• Using personal protective equipment (PPE)
• Preparing a sterile field
• Adding sterile items to a sterile field
• Putting on and removing sterile gloves
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Five Moments for Hand Hygiene (WHO,
2009)
• Moment 1 – Before touching a patient
• Moment 2 – Before a clean or aseptic procedure
• Moment 3 – After body fluid exposure risk
• Moment 4 – After touching a patient
• Moment 5 – After touching patient surroundings
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Question
Is the following statement true or false?
It is not necessary to perform hand hygiene prior to
performing a procedure using clean technique.
A. True
B. False
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Answer
B. False
Rationale: The WHO recommends hand hygiene before
touching a patient, before a clean or aseptic procedure,
after body fluid exposure risk, after touching a patient, and
after touching patient surroundings.
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Conditions Requiring Hand Hygiene
• When hands are visibly dirty
• When hands are visibly soiled with or in contact with
blood or other body fluids
• Before eating and after using the restroom
• If exposure to certain organisms, such as those causing
anthrax or Clostridium difficile, is known or suspected
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Alcohol-Based Hand Rubs
• Recommended if hands are not visibly soiled
• Advantages
– They save time
– They are more accessible
– They are easy to use
– They reduce bacterial count on the hands
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Basic Principles of Medical Asepsis
• Practicing good hand hygiene
• Carrying soiled items away from the body
• Keeping soiled items off the floor
• Avoiding having patients cough, sneeze, or breeze on
others
• Moving equipment away from the body when cleaning
articles
• Avoiding raising dust
• Cleaning least-soiled areas first
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Basic Principles of Medical Asepsis (cont.)
• Disposing of soiled or used items in appropriate
containers
• Pouring discarded liquids directly into the drain
• Sterilizing items suspected of containing pathogens
• Using personal grooming habits that prevent the spread
of microorganisms
• Following guidelines for infection control or barrier
technique
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Question
The nurse is using medical asepsis when providing patient
care on a hospital unit. Which nursing actions are
performed correctly?
A. The nurse places soiled bed linens on the floor.
B. The nurse carries soiled items close to the body.
C. The nurse moves equipment away from the body when
cleaning it.
D. The nurse cleans the most soiled areas first.
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Answer
C. The nurse moves equipment away from the body when
cleaning it.
Rationale: When using medical asepsis, the nurse would
move equipment away from the body when cleaning it,
keep soiled items off the floor and away from the body,
and clean the least soiled items first.
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Basic Principles of Surgical Asepsis
• Only a sterile object can touch another sterile object.
• Open sterile packages so that the first edge of the
wrapper is directed away from the worker.
• Avoid spilling solution on a sterile setup.
• Hold sterile objects above waist level.
• Avoid talking, coughing, or reaching over a sterile field.
• Never turn your back on a sterile field.
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Basic Principles of Surgical Asepsis
(cont.)
• Sterilize all items brought in contact with broken skin or
sterile body cavities.
• Use dry, sterile forceps when necessary.
• Consider outer 1 inch of sterile field to be contaminated.
• When in doubt, consider all suspect items contaminated.
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Criteria for Performing Hand Hygiene
• Before and after contact with each patient
• Before putting on gloves
• Before performing invasive procedures
• After accidental contact with body fluids , mucous
membranes, nonintact skin, and wound dressings, even if
hands are not visibly soiled
• When moving from a contaminated body site to a clean
one during patient care
• After contact with inanimate objects near the patient
• After removal of gloves
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Additional Guidelines for Hand Hygiene
• The use of gloves does not eliminate the need for hand
hygiene.
• The use of hand hygiene does not eliminate the need for
gloves.
• Natural fingernails should be kept less than ¼ inch long
and artificial nails should not be worn.
• Gloves should be worn when contact with blood,
infectious material, mucous membranes, and nonintact
skin could occur.
• Hand lotions or creams are recommended to moisten and
protect skin.
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Lathering Hands With Soap and Rubbing
With Firm Circular Motion
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Washing Areas Between Fingers
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Washing to 1 Inch Above the Wrist
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Using Fingernails to Clean Under Nails of
Opposite Hand
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Rinsing Hands Under Running Water With
Water Flowing Toward Fingertips
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Standard Precautions
• Follow hand hygiene techniques.
• Wear clean, nonsterile gloves when touching body fluids
excretions, secretions, contaminated items, mucous
membranes, and nonintact skin.
• Wear personal protective equipment during care
activities likely to generate splashes or sprays of blood.
• Avoid recapping used needles.
• Handle used patient care equipment appropriately.
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Standard Precautions (cont.)
• Follow respiratory hygiene/cough etiquette.
• Use safe injection practices.
• Wear a face mask if placing a catheter or injecting
material into the spinal or epidural space.
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Putting on Goggles
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Ensuring Gloves Cover Gown Cuffs
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Transmission-Based Precautions:
Airborne
• Use for patients who have infections spread through air.
• Place patient in private room with monitored negative air
pressure and door closed; keep patient in room.
• Use respiratory protection when entering the patient’s
room.
• Transport patient out of room only when necessary;
place surgical mask on patient.
• Consult CDC guidelines for prevention strategies for
tuberculosis.
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Transmission-Based Precautions: Droplet
• Use for patient with infection spread through droplets.
• Use a private room (door may remain open).
• Wear PPE upon entry into the room for all interactions
that may involve contact with the patient and potentially
contaminated areas in the patient’s environment.
• Transport the patient out of the room only if necessary;
place surgical mask on patient.
• Keep visitors 3 feet from patient.
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Transmission-Based Precautions: Contact
• Use for patients infected by a microorganism spread by direct or
indirect contact.
• Place patient in private room, if available.
• Wear PPE when entering the room for all interventions involving
contact with the patient; change infected gloves and remove PPE
before leaving the room.
• Wash hands with antimicrobial or waterless antiseptic agent.
• Wear gown if in contact with infectious agent.
• Limit movement of the patient out of the room.
• Avoid sharing patient care equipment.
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Personal Protective Equipment
• Clean (nonsterile) and sterile gloves
• Impervious gowns/aprons
• Surgical and high-efficiency particulate air (HEPA) masks,
• N95 disposable masks
• Face shields
• Protective eyewear/goggles
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Guidelines for Effective Use of PPE
• Put on PPE before contact with the patient.
• Choose appropriate PPE based on type of exposure.
• When wearing gloves, work from clean to dirty areas.
• Touch as few surfaces and items with PPE as possible.
• Avoid touching or adjusting other PPE.
• Keep gloved hands away from the face.
• Remove and replace torn or heavily soiled gloves.
• Do not substitute goggles with personal glasses.
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