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Health bites - asthma
Health Bites - Asthma
What Is Asthma?
Asthma is a long-term disease that affects the air passages in the lungs. Air passages are tiny
breathing tubes that carry air in and out of the lungs. People who suffer from asthma have very
sensitive air passages, especially when they are exposed to the things they are allergic to.
During asthma attack, the air passages swell and narrow easily. A lot of sticky mucus produced in
the air passages and caused blockage to the tiny breathing tubes of the lungs. This allows little
air moving in and out of the narrow air passages causing tightness in the chest, wheezing,
difficulty in breathing and cough.
Reproduced with permission from the Health Promotion Board, Singapore Asthma Attacks
What are the symptoms of asthma attack?
Asthma symptoms are usually more active at night, when waking up in the early morning or after
exercise. The asthma symptoms are: ○
Coughing due to mucus irritating the breathing tubes. ○
Shortness of breath due to blockage of air passing through the narrow breathing tubes. ○
Chest tightness feeling when the lung muscles are tightened. ○
Noisy breathing (wheeze).
Is asthma attack dangerous?
Yes, asthma attack can be a life threatening condition. When you have difficulty in breathing,
there is a risk that you may receive less or no oxygen to the brain especially during a serious
attack. This may cause permanent brain damage or death if you do not get to the doctor quickly.
Most asthma deaths are preventable if you follow your doctor’s instructions to use your preventive
medicines regularly. You should not stop asthma treatment on your own. When do you need to seek doctor’s advice?
It is important to recognise your asthma symptoms before it becomes serious. You should see
your doctor early when: ○
You need to use reliever more often than usual. ○
Your asthma symptoms are not relieved quickly by the reliever. ○
You have difficulty in talking and breathing. ○
Your sleep is disturbed by asthma symptoms.
You have persistent cough for more than one week.
○ Your lips colour turn grey or blue, it is an emergency case. You should call 995 for an
How do anti-asthma medicines work?
Currently there is no permanent cure for asthma but you can treat and control asthma very
effectively with anti-asthma medicines. They are divided into a few groups:
B. New combination preventers
D. Rescue steroid tablets A. Preventers:
Preventers are long-term preventive medicine to be taken every day. They control swelling in the
air passages and make them less sensitive to asthma triggers. They make asthma attacks less
frequent and less severe.
Steroid inhalers are the most effective preventers used to avoid asthma attacks and reduce
asthma deaths. They deliver medicine directly to the air passages to treat the main problems in
Steroid inhalers: ○
Usually brown and orange in colour. Some examples are
Can only be effective when is inhaled on a daily basis even if
Work slowly to reduce mucus and control swelling in the air
The slow preventive effect may take up to 4 weeks to work. ○ NOT
for treating acute asthma attack because of the slow
B. New combination preventers
The new combination preventer combines both the preventer and
long-acting reliever in a single device. ○
Red and Purple inhalers.
Effective only when inhaled on a daily basis even if you do not
Control swelling in the air passages. ○
Prevent asthma attacks and asthma deaths. ○
They are indicated when steroid inhalers alone are not
Everyone with asthma needs a quick reliever to quickly stop your
asthma symptoms to let you breathe easier. They relax the
tightened air passages during an asthma attack.
Usually blue inhalers.
to stop asthma attack. ○
prevent asthma attacks and asthma deaths. ○
reduce mucus and control swelling in the air
make the air passages less sensitive to asthma triggers. D. Rescue steroids tablets
Short courses of steroid tablets, also called rescue
steroids, are necessary to treat acute asthma attacks.
They are usually prescribed for 1 to 2 weeks
During an asthma attack, steroid tablets are given to
quickly control swelling and reduce mucus in the air
passages to prevent severe asthma attack. The
prescribed steroid tablets given by your doctor are
completely different from the anabolic steroids abused
by the sportsmen to boost their metabolism. Please consult your doctor if your condition does not improve after a short course of
Are there any side effects from steroid tablets and steroid inhalers (preventers)?
Most people are worried of the side effects of steroids. But the truth is we have natural steroids in
our body. When your doctor gives you steroid inhaler or steroid tablets, they are added to this
natural steroid to help reduce the mucus in the air passages and prevent serious asthma attack.
Side effects of steroid tablets:
During acute asthma attack, short course of steroid tablets are given to save life rather than
You may have a good appetite and may even gain weight after taking short course of steroids.
Such effects are temporary and will stop when you complete the treatment.
Only a very small number of people with troublesome asthma symptoms, who need to take
long- term steroids tablets over months or years, will have serious side effects. These include osteoporosis, high blood pressure, cataract, weight gain, bruising and prone to infection.
There is a much greater risk of side effects when taken small doses of steroid tablets over a
long period than high doses for 1- 2 weeks.
Side effects of steroid inhalers (preventers):
Side effects are uncommon, mild and temporary.
Possible side effects are hoarse voice and throat irritation. You can avoid by rinsing your
throat well after inhaling the medicine.
The dose of inhaled steroid per day is a lot smaller and the side effects are less frequent and
For example, 2 puffs of Pulmicort inhaler (200 micrograms) a day delivers 400 micrograms of inhaled steroid. In acute asthma attack, six 5 milligrams of steroid tablets a day will be given- 30,000 micrograms , 75 times more than inhaled steroid.
Steroid tablets and steroid inhalers
Why must I use my steroid inhaler every day even when I am well?
Even when you feel well, the mucus and swelling continues in the air passages. If you stop using
your steroid inhaler, the air passages in the lungs become more swollen and produce a lot of
sticky mucus. Therefore you are at risk of having an asthma attack if you are exposed to the
things you are allergic to.
This is because the effect of the steroid inhaler is slow. It may take up to 4 weeks before it is fully
effective in controlling swelling and reducing mucus in the air passages.
Common Asthma Triggers What are some of the common asthma triggers and how can you avoid them?
Asthma triggers or allergens are anything that can bring on an asthma attack when you come into
close contact with them (directly or indirectly). Different people have different asthma triggers.
These are some common asthma triggers or allergens, which you can try to avoid by taking the
following preventive measures. Asthma Triggers
9 Use synthetic or foam pillows 9 Use mite proof pillow and
9 Stop smoking if you do 9 Stay away from people who
9 Let your doctor and pharmacist 8 Take NSAIDS pain killers e.g.
medicines e.g. Propranolol, Atenolol etc
9 Use reliever inhaler 15 minutes 8 Try strenous and water sports
Are Anti-Asthma Medicines Safe For Pregnant Women?
Anti-asthma medicines such as quick reliever, steroid inhaler and short-course steroid tablets are
safe for pregnant women.
If you use your insteroid inhaler every day according to your doctor's instructions, it will help to
reduce the risk of life- threatening attack for both mother and the growing baby. Please consult your doctor for more advice regarding asthma treatment during pregnancy.
What Is Asthma Action Plan?
Asthma Action Plan is a good guide to help you become an expert in managing your asthma. The
8 Help you to recognise your asthma symptoms early.
8 Guide you to adjust your medications early according to your doctor's instructions to prevent
8 Warn you when to seek emergency help.
Please discuss with your doctor for more details if you do not have an Asthma Action Plan.
For more information on asthma, you can contact:
336 Smith Street
# 06- 302 New Bridge Centre
Telephone: 6323 1718
1800 223 1313 ( for personal advice during office hours)
1800 848 1313 ( 24 hour pre recording health information)
AIRWORTHINESS NOTICE NO. 47 APPENDIX NO. 1 31 January 2003 The following are some of the types of medicine in common use which may impairwork performance. This list is not exhaustive and care should be taken in ensuring thelikely effects of any prescribed drug are adequately known before taking it. Sleeping Tablets − These dull the senses, cause mental confusion and slowreaction times.
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