Understanding Infection Control

From a safety and quality perspective, infection control is one of the most important and least understood concerns of the HME industry. It isn't even

From a safety and quality perspective, infection control is one
of the most important — and least understood — concerns
of the HME industry. It isn't even mentioned in CMS' supplier
quality standards, yet the industry's accreditation organizations
will rightfully push infection control practices to the forefront
for each HME organization.

Several steps must be taken to be accreditation-worthy. Step one
is better understanding how infections occur.

There are things about the science of infection control that are
important and universal. We know how most infections are spread. We
know that some people are more susceptible to infections than
others. Finally, we know how to reduce the risk, or, in some cases,
prevent infections from spreading.

High school biology taught us about the infection triangle. The
three things that need to be linked together to create an infection
are the infectious microorganism (germ), the susceptible host
(patient or HME personnel) and transmission (spread of the germ) to
a susceptible host.

All of these things must be present for an infection to

Routes of Transmission1

The transmission of the germ to the patient or HME employee can
occur through one of five basic ways: direct contact, indirect
contact, droplet, airborne or common vehicle transmission.

  1. Direct Contact: Physical transfer of microorganisms
    (germs) to a susceptible host by body surface-to-body surface
    contact. Most often associated with blood-borne or sexual contact,
    this can also occur during patient care activities like turning or
    bathing. Acquiring or transmitting infections via this route would
    be a rare occurrence, since HME personnel typically have only
    brief, casual contact with patients and their environment.

  2. Indirect Contact: Contact of a susceptible host with
    contaminated hands or object. This probably represents the most
    common transmission route for HME personnel. It can happen when
    they do not wash their hands between patient visits, or when
    contact is made with a contaminated personal item such as soiled
    clothing or bedding.

    It can also occur when they come in contact with a contaminated
    common-use item such as a TV remote, writing pen, child's toy or
    eating utensil.

  3. Droplet Contact: Nasal, oral, or conjunctival (membrane
    that lines the eyelids) mucosa comes in contact with relatively
    large droplets containing germs from an infected person that is
    close by, usually within three feet.

    Germs can spread through the air through an unprotected cough,
    sneeze or talking — from a patient to HME personnel and vice
    versa, or between HME personnel.

  4. Airborne Transmission: Extremely small (droplet nuclei)
    germs that are suspended in the air or dust enter the respiratory
    tract. Unlike droplet contact, airborne transmissions are suspended
    in the air for significant periods of time and spread by
    environmental air currents.

    Important examples include tuberculosis, measles and chickenpox,
    which in the case of active symptoms or a confirmed diagnosis,
    require that HME personnel use a protective mask.

  5. Common Vehicle Transmission: Contact with contaminated
    food, water, medications, devices or equipment. HME providers'
    patients or employees can become infected by coming in contact with
    contaminated equipment or supplies.

A variety of germs (bacteria, viruses or fungi) can be the root
of an infection. Certain germs serve useful purposes, but some
germs are just plain bad. Good germs can become bad germs when they
are introduced into warm, moist areas like the eye, ear or nose and
multiply into large quantities.

Germs can produce localized infections like staph infection, or
celluitis of the skin, or they can become systemic, getting into
the blood stream and invading the entire body.

Many things can affect an individual's susceptibility to
infections. Stress, nutrition, genetic makeup and pre-existing
disease can all play a part. Any person (patient or HME employee!)
can act as a susceptible host for infectious agents. Individuals
with low white blood cell counts, such as those with leukemia or
patients with debilitating COPD are, by the very nature of their
disease, more susceptible to infections than a healthy person.

Breaking the Link: Hand Hygiene

In an effort to reduce the number of nosocomial infections, the
Centers for Disease Control developed the following guidelines for
hand hygiene.2 The term “nosocomial”
classically means a hospital-acquired infection, but the basics of
hand hygiene for anyone caring for the sick also apply to HME.

  • Hand washing with soap and water continues to be the most
    sensible strategy for hand hygiene in non-health care settings
    When health care personnel's hands are visibly soiled, they should
    take the time to wash up.

    Proper hand-washing technique includes washing with soap and
    water using plenty of lather and friction for 15 seconds, or about
    the time it takes to sing “Happy Birthday!” Cover all
    surfaces of the hands, including palms, in between the fingers and
    under fingernails, the backs of the hands and around the

    If hands are not visibly soiled or if running water is not
    available, then an alcohol hand sanitizer can be used.

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