BY DR. BEHROUZ HASHIM

 

Asthma is an inflammatory disorder of the airways, which causes attacks of wheezing, shortness of breath, chest tightness, and coughing.

 

Asthma is a disease of the respiratory system, which causes swelling and narrowing of the airways, which causes attacks of wheezing, shortness of breath, chest tightness, and coughing.

Pediatric asthma refers to asthma in children.

Causes, incidence, and risk factors

Asthma is commonly seen in children. It is a leading cause of hospital stays and school absences. Children with asthma may be able to breathe normally most of the time. When they encounter a substance that can cause problems (a “trigger”), an asthma attack (exacerbation) can occur.

Common asthma triggers include:

• Animals (hair or dander)
• Aspirin and other medications
• Changes in weather (most often cold weather)
• Chemicals in the air or in food
• Dust
• Exercise
• Mold
• Pollen
• Strong emotions
• Tobacco smoke
• Viral infections, such as the common cold

In recent years, there has been a worldwide increase in the number of children with asthma. This trend has been linked to environmental factors, including air pollution. However, it is important to understand that indoor triggers can play just as much of a role as outdoor triggers in bringing on an asthma attack.

Children’s airways are narrower than those of adults. This means that triggers that may cause only a slight problem in an adult can create more serious problems in children.

In children, an asthma attack can appear suddenly with severe symptoms. For this reason, it is important that asthma be diagnosed and treated correctly. Some children may need to take medicine every day to prevent attacks, even when they do not have symptoms.

Symptoms

• Difficulty breathing
• Fast (rapid) breathing
• Shortness of breath, even at rest
• Tightness in the chest
• Cough
• CHILDREN MAY HAVE TO SIT UP ALL NIGHT TO BREATH, LYING DOWN JUST WORSTENS THE ASTHMA SYMPTOMS.

Note: A persistent night-time cough is one common sign of asthma, even in children without other symptoms.

Emergency symptoms: GET TO A HOSPITAL QUICKLY!

• Difficulty breathing
• Bluish color to the lips and face
• Severe anxiety due to shortness of breath
• Rapid pulse
• Sweating
• Decreased level of alertness, such as severe drowsiness or confusion

Signs and tests

The doctor will use a stethoscope to listen to the lungs. Asthma-related sounds may be heard. However, lung sounds are usually normal between asthma episodes.

Tests may include:

• Lung function tests
• Peak flow measurements
• Chest x-ray
• Allergy skin or blood tests
• Arterial blood gas
• Eosinophil count (a type of white blood cell)

Signs and tests

Allergy testing may be helpful to identify allergens in people with persistent asthma. Common allergens include:

• Cockroach allergens
• Dust mites
• Molds
• Pet dander
• Pollens

Common respiratory irritants include:

• Fumes from burning wood or gas
• Pollution
• Tobacco smoke

The doctor will use a stethoscope to listen to the lungs. Asthma-related sounds may be heard. However, lung sounds are usually normal between asthma episodes.

Treatment

You and your child’s pediatrician should work together as a team to create and carry out an asthma action plan. This plan should outline how to:

• Avoid asthma triggers
• Monitor symptoms
• Take medicines

The plan should also tell you when to call the nurse or doctor.

You should also have an emergency plan that outlines what to do when your child’s asthma flares up. If your child is in school, make sure teachers, school nurses, physical education teachers, and coaches know about your child’s need to take asthma medicine. Find out what you need to do to let your child take his medicine during school hours. (You may need to sign a consent form.) Make sure the school has a copy of your child’s asthma action plan.

MEDICATIONS

There are two basic kinds of medication for the treatment of asthma:

• Long-term control medications
• Quick relief or “rescue” medications

Long-term control medications are used on a regular basis to prevent asthma symptoms, not for treatment during an attack. They should be taken every day, even when you do not have symptoms. Some people may need more than one long-term control medication.

Types of long-term control medications include:

• Inhaled steroids (such as Azmacort, Flovent) prevent swelling in your airways – these are almost the first choice of treatment
• Leukotriene inhibitors (such as Singulair).
• Long-acting bronchodilators (such as Serevent) help open airways – are usually used in combination with inhaled steroids
• Cromolyn sodium (Intal)
• Aminophylline or theophylline (not used as frequently as in the past)

Quick relief, or rescue, medications are used to relieve symptoms during an attack. These include:

• Short-acting bronchodilators (inhalers), such as Proventil, Ventolin
• Corticosteroids, such as prednisone or methylprednisolone) given by mouth or into a vein

Although these are the same medications used to treat adults, there are different inhalers and dosages especially for children. In fact, children often use a nebulizer to take their medicine rather than an inhaler, because it can be difficult for them to use an inhaler properly. Children who use an inhaler should also use a “spacer” device, which helps them to get the medicine into the lung properly.

Children with mild asthma (do not have symptoms very often) may only need quick relief medication as needed. Those who more severe asthma need to take control medications on a regular basis to prevent symptoms.

A child who is having a severe asthma attack should be immediately seen by a doctor. The child may need to stay in the hospital, and may be given oxygen and medicines by an intravenous line (IV).

ELIMINATING TRIGGERS

You and your family can help control a child’s asthma by helping get rid of the indoor triggers that make symptoms worse.

If possible, keep pets out doors, or at least away from the child’s bedroom.

No one should smoke in a house or around a child with asthma. Keeping humidity levels low and fixing leaks can reduce growth of organisms such as mold. Keep the house clean and keep food in containers and out of bedrooms — this helps reduce the possibility of cockroaches, which can trigger asthma attacks. Bedding can be covered with “allergy proof” polyurethane-coated casings to reduce exposure to dust mites. Detergents and cleaning agents in the home should be unscented.

All of these efforts can make a significant difference to the child with asthma, even though it may not be obvious right away.

Complications

The complications of asthma can be severe. Some include:

• Persistent cough
• Lack of sleep due to nighttime symptoms
• Decreased ability to exercise and take part in other activities
• Missed school
• Missed work for parents
• Emergency room visits and hospital stays
• Trouble breathing that requires breathing assistance (ventilator)
• Permanent changes in the function of the lungs
• Death

Calling your health care provider

Call your health care provider if you think that a child has symptoms of asthma. It is very important for asthma to be diagnosed and treated early in order to reduce the risk of complications. If your child is having trouble breathing or having an asthma attack, seek medical attention immediately.

Prevention

There is no fool-proof method to prevent asthma attacks. The best way to reduce the number of attacks is to eliminate triggers (especially cigarette smoke.

Remove all curtains, carpets, stuffed toys, and old pillows from the child’s bedroom.

IN PAKISTAN THE PEAK ASTHMA SEASONS ARE FEBRUARY TILL APRIL, AND AGAIN SEPTEMBER TILL DECEMBER.