Medical Spotlight: Asthma
What is Asthma?
Asthma is a chronic disease of the tubes that carry air to the lungs. These airways become narrow and their linings become swollen, irritated, and inflamed. In patients with asthma, the airways are always irritated and inflamed, even though symptoms are not always present. The degree and severity of airway inflammation varies over time.
Children with asthma may also be sensitive to colds and other viral infections, cold air, and particles or chemicals in the air. Ongoing exposures to these substances will not only worsen asthma symptoms, but also continue to aggravate airway inflammation.
Inflammation of the airways causes them to be oversensitive and “twitchy,” often called “hyperreactive.” When the airways are hyperreactive, they can go into spasms, causing blockage and symptoms of wheezing, chest tightness, and shortness of breath.
Peak Flow Meter
A peak flow meter (or, rarely, a small electronic portable spirometer) is sometimes recommended as part of a treatment plan. These handheld devices measure how fast a person can blow air out of the lungs. Asthma causes patients to not be able to blow air out fast because their airways are narrowed, so a low measurement with this device suggests problems are occurring with your child's asthma. These measurements can help warn a patient or parent that extra medication is needed to fend off more severe asthma symptoms. The results can also be useful for the patient who does not adequately perceive worsening airway obstruction or who has difficulty distinguishing anxiety or hyperventilation attacks from asthma.
Common Asthma Triggers
Viral infection
Tobacco smoke & other pollutants
Indoor allergens
Outdoor allergens
Furry animals
Cold air & changing weather
Exercise
Insects
Stress
How to Use Inhalers
