|
What is Diabetes? |
|
Diabetes
mellitus or more commonly called diabetes is a condition where there is an
absence or inadequate secretion of insulin. Insulin is a hormone made in an
organ in our body called the pancreas. The function of the insulin in the
body is to absorb the glucose from our diet and turn it into energy.
In a
diabetic patient, the pancreas does not produce enough insulin or the
available insulin is blocked or inactivated by other substances thus
preventing it from performing this function. This results in excess glucose
in the blood. After a period of time this can lead to serious complications.
The condition cannot be cured but can be controlled with lifelong treatment.
|
Type I and Type ll Diabetes
|
|
There are 2 types of diabetes:
Type l
This
is also known as insulin dependent diabetes mellitus (IDDM). In Type l
no insulin is made in the body. This can occur at any age but
especially in the young. Treatment is in the form of dietary controls
and insulin injections.
Type ll
This
is also known as non-insulin dependent diabetes mellitus (NIDDM). This
accounts for 90% of all cases. In Type ll, the pancreas produces
insufficient insulin. It usually occurs in people over the age of 40
and about 85% of patients are obese at the time of diagnosis. Very
often other membes of their family also have diabetes. Type II
diabetes can be treated by dietary controls alone or dietary controls
and anti-diabetes tablet. Some may also need insulin injections.
Extra demands on the pancreas can also cause some women to develop
diabetes during pregnancy. This is referred to as gestational diabetes
(GDM). About 20-50% of GDM patients will develop diabetes in later
life.
|
|
What are
the symptoms?
|
|
Symptoms are similar for both types of diabetes. The most common
symptoms are: -
-
excessive
urination
-
constant thirst
-
tiredness
-
frequent hunger,
strong appetite
-
weight loss
despite a hearty appetite
-
frequent fungal
infections especially in the genital areas
-
blurred vision
|
|
|
What Causes Asthma? |
|
The root
cause of asthma is not known but people with asthma have airways which are
abnormally sensitive to things that do not bother people who do not have
asthma. These things which can set off an asthma attack are called
'triggers'. Not everyone with asthma have the same triggers, so it is
helpful to identify those that cause you to have an asthma attack.
Common
triggers for asthma attacks include:
-
cigarette smoke (
active and passive )
-
car exhaust fumes
-
scented products e.g.
perfumes, hairsprays, cosmetics
-
high concentration of
dust in the atmosphere
-
heavy atmospheric
pollutants e.g. haze
-
inhaling cold, dry air
-
prolonged and
continuous exercise ( the attack does not occur during the period of
exercise, but at the end of it )
-
emotional factors e.g.
crying, laughing
-
changes in the weather
and temperature
-
during/after lung
infections, colds and flu
-
feathers of all
warm-blooded pets ( e.g. dogs, cats, and small rodents )
-
cockroaches
-
house dust mites
-
pollen from grass,
trees and mold
-
medicines e.g.
aspirin, some drugs prescribed for arthritis ( non steroidal
anti-inflammatory drugs) and beta-blockers which are prescribed as tablets
for high blood pressure or drops for eye problems.
|
|
Asthma Medication |
|
There are
a variety of medicines that can treat asthma. They are available on
prescription from your doctor who will choose the type of treatment that is
most suited to you.
Medication
used to treat asthma is basically divided into two groups ------ relievers
and preventers. The main aim of treatment is to
prevent
asthma attacks and to stop the symptoms of an attack once it has begun.
|
Preventers |
|
Preventers are used to prevent attacks or daily symptoms. It should be
used as directed by your doctor to help reduce the frequency and
severity of attacks. However, it does not give rapid relief of the
asthma symptoms and therefore cannot be used for acute attacks.
When
used over a period of time (minimally two weeks) preventers reduce the
inflammation of the airways and also the production of mucus. You must
not stop using them without the advice of your doctor as they keep the
condition at bay. They should be used even though you have not had an
asthma attack for some weeks.
Examples of preventers are anti-inflammatory agents such as budesonide,
beclomethasone or fluticasone. |
|
Oral Corticosteroids |
|
Sometimes a short cause of oral steroids (e.g. prednisone) is also
needed, particularly if the asthma attack is bad. The purpose of this
is to bring the asthma patient's condition back under control. The
oral steroid is usually stopped after a short period of time.
|
|
Relievers |
|
Relievers act quickly and are used to relieve the symptoms of an
attack. These are given when the asthma patient begins to cough and
wheeze. They act by relaxing the muscles in the airways, thereby,
allowing the air to flow more normally into the lungs. Your doctor
will advise you how often you need to use the reliever ( usually once
every 3 to 4 hours).
In
cases of more severe asthma, it may be used more frequently. You are
advised to inform your doctor if you find that you are often needing
extra doses. Relievers are also used before exercise or sport for
children who get symptoms such as cough, wheezing or shortness of
breath when they play. The medication is taken just before the
activity begins, and during it if needed.
Examples of relievers (bronchodilators) are salbutamol, fenoterol,
ipratropium bromide or terbutaline.
|
|
|
Inhalation Therapy |
|
Asthma is
a disease of the lungs and airways, so the most obvious and direct route for
delivering medication to treat the condition is by inhalation. Medicines
taken by mouth (apart from steroids) are not as effective as when they are
inhaled, and may cause unwanted side effects. Inhalation also enables lower
doses of medication to be used than if they were taken by mouth. This then
reduces the risk of systemic side effects. Asthma medications are therefore
generally given by inhalation.
|
Delivery devices
|
|
There are a variety of devices available to ensure that patients are
given an inhaler they can and will use. This is important as the right
choice would mean the medication can get to work in the airways as
soon and as effectively as possible. Each device has its own
advantages and some suit some people more than others. Your doctor
will help you choose the device most suitable for you or your child.
-
Metered dose
inhalers (MDIs)
Of all the
devices available MDIs are the most commonly prescribed by doctors.
These inhalers use a small aerosol to deliver a measured amount of
drug directly into the airways. The advantages of MDIs are that if
used correctly they are effective, small and portable, and
relatively cheap. However it requires good coordination between
activating the device and inhalation. MDIs are therefore considered
generally unsuitable for children below 6 years and for many elderly
patients or those with problems such as arthritis
-
Spacer devices
(
e.g. Aerochamber, Volumatic)
If your child is below 6 years of age, a metered dose inhaler used
with a spacer is probably the best method. Spacers are essentially
holding chambers that are connected to the MDI.
The
medication is released from the MDI into the spacer .The spacer
holds the medication until the patient is ready to breathe and
allows the patient to breathe at a slower and more effective rate.
Spacers are available with face masks, which makes them suitable to
use with babies, younger children and older people.
Anti-inflammotory agents such as inhaled steroids can occasionally
lead to thrush in the mouth and throat. The use of spacers or
holding chambers can help prevent this. Patients are also advised to
rinse their mouths after using the inhaler.
-
Breath actuated
MDIs
(e.g. Autohaler )
This type of inhaler releases the medication when the patient
breathes in through the mouth piece. This is much easier to use than
the conventional MDIs and children will find this easy to handle. It
is however much more expensive than a MDI.
-
Dry powder
inhalers
(e.g. Diskhaler,
Spinhaler, Turbohaler, Rotahaler
)
These
inhaler devices rely on the inspiration of a dry powder. These are
particularly suitable for children above 5 years of age as they are
extremely easy to use.
Nebulisers devices have the advantage of delivering a much higher dose
of medication than any of the other inhalation devices. What the
nebuliser does is convert a solution containing medication into a fine
mist which can be inhaled into the lungs . These are especially useful
during a bad attack of asthama when the patient may be affected to
such an extent that the usual inhaler is not able to deliver the
medication as effectively. Nebilisers are not usually necesary and you
should only buy on eon the advice of your doctor.
|
|
|
Diabetes Treatment |
|
There is
no cure for diabetes, but it can be controlled. The aim of diabetes
treatment is to relieve the symptoms and return the blood sugar level to
normal. Diabetes left uncontrolled can lead to long term damage to the
kidneys, eyes, feet and blood vessels. The key to management of diabetes
includes diet, exercise, anti-diabetes medication and insulin injections.
|
Diet
|
|
Diet plays a very important part in the management of diabetes. As
diabetes is a disorder of glucose utilisation, many people assume
incorrectly that they need only avoid sweet foods and drinks to manage
the condition. There's more to managing diabetes than that.
-
Diabetes should have
3 regular meals daily and they do not miss any meals.
-
Starchy foods which
are high in fiber, should form the basis of a diabetic's diet. Such
foods include whole meal bread, noodles, oats, unsweetened crackers,
chickpeas and lentils.
-
Foods that are high
is sugar (e.g. white refined sugar, chocolate and honey) and fats should
be kept to a minimum. Fat increases their risk of getting heart disease.
It is also recommended that the food be grilled instead of fried.
-
Salty foods and salt
intake must be reduced. Avoid foods such as crisps and peanuts.
-
Diabetics should
plan their meals in advance. A consistent balance of meals makes
certain that there's a consistent intake of calories. This in turn
ensures there's a consistent glucose load which the body can handle
itself or with the help of anti-diabetes medications or insulin
injections.
-
Adjustment of
caloric intake is recommended to achieve and maintain a desirable body
weight. This can be done with the help of the doctor.
-
Alcohol consumption
should be kept to a minimum as too much alcohol can upset the blood
sugar level.
Eating
'diabetic' foods is not necessary as that do not offer any special
advantages for the diabetic patient. These products are not usually any
lower in calories than their ordinary counterparts. There are also
specialized nutrition formulas for diabetics who can't stick to a diabetic
diet. Such formulas aim to provide the nutritional requirements of the
diabetic. It is important to remember that healthy eating is the key to a
diabetic's diet and they can eat the same type of diet that everyone
should be eating.
|
|
Exercise
|
|
Nearly half of patients with Type II diabetes are overweight. Their
enlarged fat cells do not respond well to insulin and also require the
body to produce more insulin. Besides dietary controls, exercise are a
great help in reducing weight. The goal is to keep their weight as close
to the ideal body weight. Regular exercise also helps the insulin to work
better and keeps the patient healthier.
However,
it is advisable for the patient to consult their doctor on a suitable
exercise plan to avoid hypoglycaemia. This can happen if the insulin does
is not reduced before exercise or not enough food was consumed before
exercise. Your doctor will be able to advice you on the choice of
exercise, dietary and medication adjustments that may be required.
|
|
Insulin
|
|
Type I
diabetic patient require insulin injections daily. Type II diabetic
patients may or may not need them. The first insulin available for
treatment was produced in 1921. During that time the insulin was
extracted from the pancreas of cattle and pigs (bovine and porcine
insulin's). With the improvements in technology, synthetic human insulin,
which is identical to the insulin made in our body, can now be produced
using yeast and bacteria.
Insulin
has to be given by injection as it can be destroyed in the stomach if
taken orally. The patient's doctor makes decisions on insulin treatment,
as each patient's insulin treatment is individualized according to the
needs.
There
are many types of insulin available.
The
different types of insulin which are available are distinguished by:
-
the
onset of action
the speed at
which the injected insulin is absorbed into the blood
-
Peak
effect
the time the
insulin level reaches its peak
-
Duration
of action
the time it
takes for all the injected insulin to be absorbed.
|
|
Anti-Diabetes Tablets
|
|
These tablets do not contain insulin. Instead they contain drugs which
either help the pancreas to produce more insulin or help the body to use
sugar more effectively. They can sometimes produce side effects like low
blood sugar attacks, sickness, diarrhea and rashes. Patients should
notify their doctor when they experience unexpected problems after
starting with these tablets.
|
|
|
Hypoglycaemia (Low Blood Sugar) |
|
Diabetic
patients should be aware that low blood sugar can occur with the use of
tablets or insulin. This condition could be due to:-
Adjustments need to be made if there are variations in the diet or amount
of exercies done by the diabetic patient as this can lead to too little
glucose in the bloodstream and excess of insulin, thus giving rise to
hypoglycaemia.
|
Symptoms
|
|
Symptoms
of
hypoglycaemia include:
-
Lack of
concentration
-
Irritability
-
Shaking and weakness
-
Sweating
-
Blurred vision
|
|
Treatment
|
|
The
treatment is to promptly take sugar by mouth ( in the form of glucose
tablets, sugar lumps or glucose drink). Recovery is usually very quick.
Occasionally, unconsciousness can occur and hospital treatment is
necessary.
|
|
|
Diabetic Complications |
|
Both
insulin dependent and non-insulin dependent diabetics are susceptible to
complications. Many of these complications may be serious if undetected
and untreated as diabetes can affect almost every part of the body. Long
term damage to the feet, kidneys, eyes and blood vessels are perhaps the
most devastating complications to the diabetic patient. Although early
detection helps, it can be difficult because many of these complications
do not show any obvious symptoms until the problem is well
advanced, and the damage has been done.
|
Complications |
End-results |
|
Retinopathy
(Disease of the back eye) |
May
cause impaired vision and can lead to blindness |
|
Neuropathy
|
Nerve damage which can lead to pain or lack of sensation in the hands
and feet. May also cause problems with digestion or the heart
(irregular heart beat) |
|
Nephropathy |
May
lead to kidney failure and cause early death
|
|
Large blood vessel damage
|
Leads to heart attacks, strokes and/ or lower limb amputations
|
These complications may occur singly but often in combination. The extent
of damage is very much dependent on the duration of the diabetes and its
degree of control. This makes controlling of the blood sugar very
important.
|
|
Control of Blood Glucose Level |
|
Good
control takes time but it is worth the effort. Good control can be
achieved by regular monitoring of blood glucose levels. These levels will
indicate whether your current treatment of the condition needs adjustment.
Normal
level of sugar in the blood for non-diabetics is between 4 & 8 mmol/L. A
reading between these two levels indicate good control. Up to 10 mmol/L is
regarded as acceptable control but over 10 mmol/L more than occassionally
is too high. Similarly, below 4 mmol/L indicates a lower than normal blood
glucose. Signs of hypoglycaemia will possibly acccompany this.
Another
monitoring option is the HbA1 (also called Glycosylated Haemoglobin blood
test). This tells where your blood glucose levels have been, in the past
average 6-8 weeks. The HbA1 test gives you and your doctor an overall view
of your diabetes control.
|
Blood Glucose Monitoring
|
|
Monitoring glucose level can be done through urine or blood testing.
However, blood testing is more accurate. Home blood glucose meters are
available and these are simple to use. Check with your doctor or
pharmacist on which meter to choose and the proper techniques of using
them.
These
tests are simple to do and can be done anytime you need to get a reading.
It is usually recommended that you carry out 2-3 readings in a day, 2-3
days in a week. Readings can be taken at times either before or after
meals as it varies from person to person. These readings should be
recorded in a record book or diary to be shown to the doctor during
routine visits. Whener you feel that the readings is 'too low' or much
'too high'. it is recommended that referral to your doctor is necessary.
From these readings your doctor can help you to adjust your diet or
exercise, or even your medication, to keep your blood glucose levels
within the targeted range.
|
|
|
Diabetic Self - Care Needs |
|
In
addition to adhering to a strict regime of diet, exercise and
medications, diabetics also have special self-care needs. Diabetic patients
are prone to complications of the diseases, which cause long term damages.
They have to protect themselves against these complications. Special care
has to be taken of the skin, feet, eyes, and teeth to prevent infections and
other problems cropping up.
|
|
Skin
Care
|
|
Diabetics are prone to skin infections because the high sugar levels in
the body are conducive to bacterial and fungal growth. As such diabetics
have to ensure that their skin care routine can minimize the occurrence of
skin infections. Therefore, correct skin cleansing and the use of skin
care preparations are important.
-
Use cleansing agents
which are acidic, with a pH of about 5.5. This ensures that the skin's
natural protective function is maintained.
-
Cleansers should be
mild, as strong preparations can irritate the skin.
-
Use lukewarm water
to wash.
-
Alkaline-based
cleansing agents should be avoided especially if the skin is itchy or
inflamed.
-
Refrain from
scratching if skin is itchy. A break in the skin can encourage
infection. Apply a lotion or cream with anti-itch properties.
-
When washing do not
forget areas such as armpits, genital and parietal areas, skin folds on
the areas between the toes.
-
After washing, apply
a moisturizing lotion to keep the skin moist and supple.
-
Take special care to
avoid any injuries or scratches.
|
|
Foot
Care |
|
Foot care is especially important to the diabetic patient. In addition to
skin infections, the feet are also prone to ulceration. This is due to the
reduced blood supply and oxygen to the legs.
-
Diabetics should
wash their feet daily and dry them thoroughly. Remember to ensure that
the spaces between the toes are kept dry too.
-
If you have dry
skin, massage a little moisturizing cream onto it, but not between the
toes.
-
Socks are to be
changed daily.
-
Toenails should be
kept trimmed. When trimming toenails do it straight across and avoid
trimming too close to the skin to avoid unnecessary injuries.
-
Shoes should be
comfortable and not too tight a fit. Always feel inside shoes before
putting them on as the reduced sensitivity in the feet prevents you from
feeling sharp objects or pieces of grit under the feet.
-
The feet must be
examined daily to look out for scratches, blisters, ulcers or any other
wounds.
-
Diabetes should not
go around barefoot.
-
It is important to
remember not to apply any chemical agents to the feets such as corn or
callous removers including corn plasters. These contain acids, which can
be very dangerous to the diabetic patient.
|
|
Eye Care
|
|
Diabetics are also prone to certain eye diseases such as cataracts,
glaucoma and even blindness (due to retinopathy). The incidence of
cataracts is higher in diabetes and also it progresses at a faster rate
in diabetics.
Glaucoma
is also more common in diabetics. Early diagnosis and proper management
is essential to prevent optic nerve damage and loss of vision as a
consequence of the damage.
Diabetic
retinopathy is one of the leading causes of blindness. The longer the
person suffers from diabetes, the greater the risk of developing diabetic
retinopathy which can lead to blindness.
Diabetic
must:
-
go for annual eye
check-ups.
-
carry out blood
pressure checks routinely.
-
refer to an
ophthalmologist promptly if there are visual problems.
|
|
Tooth
Care
|
|
Care on
the teeth is also important. Diabetics should be careful of any lesions in
the mouth or gums. These can easily become infected and cause a myriad of
problems.
Diabetics should pay a 6 monthly visit to their dentist to ensure that all
is well with their gums and teeth. |
|