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What
soman is:
- Soman
is a human-made chemical warfare agent classified as a nerve agent.
Nerve agents are the most toxic and rapidly acting of the known
chemical warfare agents. They are similar to insecticides
called organophosphate insecticides in terms of how
they work and what kinds of harmful effects they cause. However,
nerve agents are much more potent than insecticides.
-Soman was originally developed as an insecticide in
Germany in 1944.
-Soman is also known as GD.
-Soman is a clear, colorless, tasteless liquid with
a slight camphor odor (for example, Vicks Vapo-Rub®)
or rotting fruit odor.
Where
soman is found and how it is used:
-Soman is not found naturally in the environment.
-It is possible that soman or other nerve agents
were used in chemical warfare during the Iran-Iraq War in the
1980s.
How
people can be exposed to soman:
-Following release of soman into the
air, people can be exposed through skin contact, eye contact,
or inhalation (breathing in the soman mist).
-Following release of soman into water,
people can be exposed by drinking contaminated water or getting
contaminated water on their skin.
-Following contamination of food with soman, people
can be exposed by eating the contaminated food.
-A persons clothing can release soman for
about 30 minutes after contact with soman vapor, which can lead to
exposure of other people.
-Soman breaks down slowly in the body, meaning
that repeated exposures to soman and/or other nerve agents can have
a cumulative effect (build up in the body).
How
soman works:
-The extent of poisoning caused by soman depends
on the amount of soman a person was exposed to, how the
person was exposed, and the length of time of the exposure.
-Symptoms will appear within a few seconds after
exposure to the vapor form of soman, and within a few minutes
to up to 18 hours after exposure to the liquid form.
-All the nerve agents cause their toxic effects
by preventing the proper operation of the chemical that acts as
the bodys off switch for glands and muscles.
Without an off switch, the glands and muscles are constantly
being stimulated. They may tire and no longer be able to sustain
breathing function.
-Soman vapor is heavier than air, so it would be more
likely to settle in low-lying areas.
-Soman mixes easily with water, so it could be
used to poison water.
-Compared with other nerve agents, soman is more
volatile than VX but less volatile than sarin. The higher a chemicals
volatility, the more likely it will evaporate from a liquid
into a vapor and disperse into the environment.
People can be exposed to the vapor even if they do not come in contact
with the liquid form.
-Because of its high volatility, soman is an immediate
but short-lived threat and does not last a long time in the
environment.
-Because soman is more volatile than the nerve
agent VX (the most potent nerve agent), it will remain on exposed
surfaces for a longer period of time compared with VX.
Immediate
signs and symptoms of soman exposure:
Although soman has a camphor or fruity odor, the odor may not
be noticeable enough to give people sufficient warning against a
toxic exposure.
People exposed to a low or moderate dose of soman by inhalation,
ingestion (swallowing), or skin absorption may experience some or
all of the following symptoms within seconds to hours of exposure:
-Runny nose -Watery
eyes
-Small, pinpoint pupils -Eye
pain
-Blurred vision -Drooling
and excessive sweating
-Cough -Chest
tightness
-Rapid breathing -Diarrhea
-Increased urination -Confusion
-Drowsiness
-Weakness
-Headache -Nausea,
vomiting, and/or abdominal pain
-Slow or fast heart rate -Abnormally
low or high blood pressure
-Even a tiny drop of nerve agent on the skin can cause
sweating and muscle twitching here the agent touched the skin.
-Exposure to a large dose of soman by any route
may result in these additional health effects: Loss of
consciousness, Convulsions, Paralysis, Respiratory failure
possibly, leading to death
What the long-term health effects are:
Mild or moderately exposed
people usually recover completely. Some studies in animals and people
suggest that severe nerve agent poisoning can cause long-term central
nervous system effects, such as changes in brain activity. However,
it is unclear what such changes may mean, if anything, regarding
the function and long-term health status of a person who has been
mildly or moderately exposed to soman.
How people can protect themselves and what they should
do if they are exposed to soman:
Recovery from soman exposure is
possible with treatment, but the antidotes available must be used
quickly to be effective. Therefore, the best thing to do is avoid
exposure. If exposure cannot be avoided, rapidly decontaminate and
get medical care as quickly as possible.
Leave the area where the soman was
released and get to fresh air. Quickly moving to an area where fresh
air is available is highly effective in reducing the possibility
of death from exposure to soman vapor.
If the soman release was outdoors,
move away from the area where the soman was released. Go to the
highest ground possible, because soman is heavier than air and will
sink to low-lying areas.
If the soman release was indoors,
get out of the building.
Remove any clothing that has liquid
soman on it, and if possible, seal the clothing in a plastic bag.
Then seal the first plastic bag in a second plastic bag. Removing
and sealing the clothing in this way will protect you and others
from any chemicals that might be on your clothes.
If helping other people remove their
clothing, try to avoid touching any contaminated areas, and remove
the clothing as quickly as possible.
Rinse the eyes with plain water for
10 to 15 minutes if they are burning or vision is blurred.
As quickly as possible, wash any liquid
soman from the skin with large amounts of soap and water. Washing
with soap and water will protect people from any chemicals on their
bodies.
If soman has been ingested (swallowed),
do not induce vomiting or give fluids to drink. Seek medical attention
right away.
Stay calm. Dial 911 and explain what
has happened.
Wait for emergency personnel to arrive.
How
soman poisoning is treated:
Soman poisoning is treated with antidotes and supportive medical
care. The most important thing is for victims to be rapidly decontaminated
and get medical treatment as soon as possible.
People
can contact one of the following:
Regional poison control center (1-800-222-1222)
Centers for Disease Control and Prevention Public Response Hotline
(CDC)
English (888) 246-2675
Español (888) 246-2857
TTY (866) 874-2646
Agency for Toxic Substances and Disease Registry (ATSDR) (1-888-422-8737)
All
information obtained from the CDC
(Center for Disease Control and Prevention)
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