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With over 5,000 asthma related deaths
reported in the U.S. each year - most of
which are children - periodic testing of
your indoor environments for asthma and
allergen triggers is prudent.
The following information is provided to
bring greater awareness to the invisible
world of deadly airborne micro-particles
that can cause asthma and trigger attacks.
For more information on testing your home
or workplace for
indoor asthma and allergens, call AMI today
at 1-800-369-8532.
Most Americans spend up to 90% of their
time indoors. We like to think of our homes,
schools, and workplaces as safe, but just
how safe are they?

Since indoor allergens can play a
significant role in triggering asthma
attacks it is important to recognize
potential asthma triggers indoors and reduce
your exposure to those triggers. With
today's technology, indoor environments can
be tested for asthma triggers and allergens
quickly and affordably.
Common Indoor Asthma Triggers and
Allergens
Some of the most common indoor asthma
triggers include secondhand smoke, dust
mites, mold, cockroaches and other pests,
household pets, and combustion byproducts.
You may not be affected by all of these
triggers. However, your doctor can help you
to determine which triggers affect your
asthma or may lead to you developing asthma
and help you develop a customized asthma
management plan.
Dust Mites
Dust
Mites are too small to be seen, but can be
found in almost every home in mattresses and
bedding materials, carpets, upholstered
furniture, stuffed toys and curtains.
What are Dust
Mites?
Dust mites are tiny insects that are
invisible to the naked eye. Every home has
dust mites. They feed on human skin flakes
and are found in pillows, mattresses,
carpets, upholstered furniture, bedcovers,
clothes, stuffed toys and fabric and
fabric-covered items. Body parts and feces
from dust mites can trigger asthma in
individuals with allergic reactions to dust
mites, and exposure to dust mites can cause
asthma in children who have not previously
exhibited asthma symptoms.
Actions You
Can Take
- Cover mattresses and pillows with
dust proof ("allergen-impermeable")
zippered covers.
- Wash bedding (sheets, blankets and
bedcovers) once per week in hot water.
- Choose washable stuffed toys, wash
them often in hot water and dry them
thoroughly.
- Keep stuffed toys off beds.
- Maintain low indoor humidity,
ideally between 30-50% relative
humidity.
- Humidity levels can be measured by
hygrometers which are available at local
hardware stores.
- If you are purchasing a home it is
strongly recommended that you have the
home tested for the presence of dust
mite allergens (Der p I and Der f I)
Common house dust may contain asthma
triggers. When you are treating your house
for dust mites, try these simple steps as
well.
- Remove dust often with a damp cloth.
- Vacuum carpet and fabric-covered
furniture to reduce dust build-up.
- Using vacuums with high efficiency
filters or central vacuums may be
helpful.
- People with asthma or allergies
should leave the area being vacuumed.
Molds
Indoor mold growth is one of the leading and
most debilitating causes of asthma attacks.
What
are Molds?
Molds are microscopic fungi that live on
plant and animal matter. Molds can be found
almost anywhere; they grow on virtually any
substance when moisture is present.
Molds produce tiny spores to reproduce, just
as plants produce seeds. Mold spores waft
through the indoor and outdoor air
continually. When mold spores land on a damp
spot indoors, they may begin growing and
digesting whatever they are growing on in
order to survive. Some molds can grow on
wood, paper, carpet, foods and even
dynamite.
There is no practical way to eliminate all
molds indoors; the way to control indoor
mold growth is to control moisture.
How Does Mold
Affect Asthma?
For people sensitive to molds, inhaling mold
spores can cause an asthma attack, there is
new evidence that indicates exposure to high
levels of indoor molds can actually cause
children to develop asthma.
Actions You
Can Take
- If mold is a problem in your home,
you need to clean up the mold and
eliminate sources of moisture.
- Wash mold off hard surfaces and dry
completely. Absorbent materials, such as
ceiling tiles and carpet, may have to be
replaced if they are contaminated with
mold.
- Fix leaky plumbing or other sources
of water.
- Keep drip pans in your air
conditioner, refrigerator and
dehumidifier clean and dry.
- Use exhaust fans or open windows in
kitchens and bathrooms when showering,
cooking or using the dishwasher.
- Vent clothes dryers to the outside.
- If you are purchasing a home, or
suspect that mold may be present at high
levels in your home, it may be prudent
to have your home inspected and tested.
- Maintain low indoor humidity,
ideally between 30-50% relative
humidity. Humidity levels can be
measured by hygrometers, which are
available at local hardware stores.
Cockroaches
Droppings
and body parts of cockroaches and other
pests can trigger asthma. Certain proteins,
called allergens, are found in cockroach
feces and saliva and can cause allergic
reactions, or trigger asthma symptoms, in
some individuals. Cockroaches are commonly
found in crowded cities and the southern
regions of the United States. Cockroach
allergens likely play a significant role in
asthma in many inner-city areas.
Actions You
Can Take
An important key to pest management is to
remove places in your home for pests to hide
and to keep exposed areas free of food and
water. But remember, pesticides you may
spray to prevent pests are not only toxic to
pests, they can harm people too. Try to use
pest management methods that pose less of a
risk.
Tips to prevent pests:
- Do not leave food or garbage out.
- If you are purchasing a home it is
strongly recommended that you have the
home tested for the presence of
cockroach allergens (Blag I)
- Store food in airtight containers.
- Clean all food crumbs or spilled
liquids right away.
- Wash dishes as soon as you are done
using them.
- Keep counters, sinks, tables and
floors clean and clear of clutter.
- Fix plumbing leaks and other
moisture problems.
- Seal cracks or openings around or
inside cabinets.
- Remove piles of boxes, newspapers
and other hiding places for pests from
your home.
Make sure trash is stored in containers
with lids that close securely, and
remove trash daily.
Try using poison baits, boric acid or
traps first before using pesticide
sprays.
If sprays are used:
Limit the spray to the infested area.
Do not spray where you prepare or store
food, or where young children play,
crawl or sleep.
Carefully follow instructions on the
label.
Make sure there is plenty of fresh air
when you spray and keep people with
asthma out of the room while spraying.
After spraying, the room should be
thoroughly aired out.
Domestic Animals
Warm-Blooded
Pets (such as cats and dogs) skin flakes,
urine and saliva can be found in homes where
pets are allowed inside.About Pets and
Asthma
Your pet's dead skin flakes, urine, feces,
saliva and hair can trigger asthma. Dogs,
cats, rodents (including hamsters and guinea
pigs) and other mammals can trigger asthma
in individuals with an allergic reaction to
animal dander. Proteins in the dander, urine
or saliva of warm-blooded animals (e.g.,
cats, dogs, mice, rats, gerbils, birds,
etc.) have been reported to sensitize
individuals and cause allergic reactions or
trigger asthma episodes in individuals
sensitive to animal allergens.
The most effective method to control animal
allergens in the home is to not allow
animals in the home. If you remove an animal
from the home, it is important to clean the
home (including floors and walls, but
especially carpets and upholstered
furniture) thoroughly.
Pet allergen levels are reported to stay in
the home for several months after the pet is
removed even with cleaning. Isolation
methods to reduce animal allergen in the
home have also been suggested by reputable
health authorities (e.g., keeping the animal
in only one area of the home, keeping the
animal outside or ensuring that people with
allergies or asthma stay away from the
animal) but the effectiveness of these
methods has not been determined. Several
reports in the literature indicate that
animal allergen is carried in the air and by
residents of the home on their clothing to
all parts of the home, even when the animal
is isolated. In fact, animal allergen is
often detected in locations where no animals
were housed.
Often, people sensitive to animal allergens
are advised to wash their pets regularly.
Recent research indicates that washing pets
may only provide temporary reductions in
allergen levels. There is no evidence that
this short term reduction is effective in
reducing symptoms and it has been suggested
that during the washing of the animal the
sensitive individual may be initially
exposed to higher levels of allergens.
Thus, the most effective method to control
exposure to animal allergens is to keep your
home pet free. However, some individuals may
find isolation measures to be sufficiently
effective. Isolation measures that have been
suggested include keeping pets out of the
sleeping areas, keeping pets away from
upholstered furniture, carpets, and stuffed
toys, keeping the pet outdoors as much as
possible and isolating sensitive individuals
from the pet as much as possible.
Actions You Can Take
If pets are one of your asthma triggers,
strongly consider finding a new home for
your pets.
Keep pets out of the bedroom and other
sleeping areas at all times and keep the
door closed.
Keep pets away from fabric-covered
furniture, carpets and stuffed toys.
Vacuum carpets, rugs and furniture two or
more times per week.
If you are purchasing a resale home it is
strongly recommended that you have the home
tested for the presence of cat or dog
allergens (Fel d I and Can f I)
Nitrogen
Dioxide
Nitrogen Dioxide is an odorless gas that can
be a byproduct of indoor fuel-burning
appliances, such as gas stoves, gas or oil
furnaces, fireplaces, wood stoves and
unvented kerosene or gas space heaters.
What is
Nitrogen Dioxide?
Nitrogen Dioxide (NO2) can be a byproduct of
fuel-burning appliances, such as gas stoves,
gas or oil furnaces, fireplaces, wood stoves
and unvented kerosene or gas space heaters.
NO2 is an odorless gas that can irritate
your eyes, nose and throat and cause
shortness of breath. In people with asthma,
exposure to low levels of NO2 may cause
increased bronchial reactivity and make
young children more susceptible to
respiratory infections. Long-term exposure
to high levels of NO2 can lead to chronic
bronchitis.
Actions You
Can Take
- Properly ventilate a room where a
fuel-burning appliance is used and use
appliances that vent to the outside
whenever possible.
- Do not idle the car inside your
garage.
- Have the entire heating system --
including furnace, flues and chimneys --
professionally inspected and cleaned
annually.
- Always open the flue on your
fireplace before building a fire to
ensure that smoke escapes through the
chimney.
- Make sure the doors are tight
fitting on your wood-burning stove and
follow the manufacturer's directions for
starting, stoking and putting out the
fire.
- Follow the manufacturer's directions
for proper fuel use on unvented kerosene
or gas space heaters and keep the heater
properly adjusted.
- Open a window slightly or use an
exhaust fan in the room while using the
heater.
- Install and use an exhaust fan over
a gas stove and vent it outdoors.
Secondhand Smoke
What is
Secondhand Smoke?
Secondhand smoke, also known as
Environmental Tobacco Smoke (ETS), consists
of exhaled smoke from smokers and side
stream smoke from the burning end of a
cigarette, cigar or pipe. Secondhand smoke
contains more than 4,000 substances,
including several compounds that are known
carcinogens.
How Does
Secondhand Smoke Affect Asthma?
Secondhand smoke can trigger asthma episodes
and increase the severity of attacks.
Secondhand smoke is also a risk factor for
new cases of asthma in preschool aged
children who have not already exhibited
asthma symptoms. Scientists believe that
secondhand smoke irritates the chronically
inflamed bronchial passages of people with
asthma. Secondhand smoke is linked to other
health problems, including lung cancer, ear
infections and other chronic respiratory
illnesses, such as bronchitis and pneumonia.
Many of the health effects of secondhand
smoke, including asthma, are most clearly
seen in children because children are most
vulnerable to its effects. Most likely,
children's developing bodies make them more
susceptible to secondhand smoke's effects
and, due to their small size, they breathe
more rapidly than adults thereby taking in
more secondhand smoke. Children receiving
high doses of secondhand smoke, such as
those with smoking mothers, run the greatest
relative risk of experiencing damaging
health effects.
Actions You
Can Take
- Choose not to smoke in your home or
car and don't allow others to do so.
- Choose not to smoke in the presence
of people with asthma.
- Choose not to smoke in the presence
of children, who are particularly
susceptible to the harmful effects of
secondhand smoke.
- Do not allow baby-sitters,
caregivers or others in your home to
smoke in your house or near your
children.
- Take the Smoke-free Home Pledge and
encourage others to do so.
- Talk to your children's teachers and
day care providers about keeping the
places your children spend time
smoke-free.
For more information on testing your home
or workplace for indoor asthma and
allergens, call AMI today at 1-800-369-8532.
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