Asthma
Asthma is a chronic disease of the airways of your lungs. These airways are also known as bronchial tubes. In the case of asthma, chronic means that it never goes away.
Asthma can be very serious. In the United States alone, it leads to about 4,000 deaths, 2 million emergency department visits, and 500,000 hospitalizations each year. Furthermore, there is increasing evidence that, if left untreated or improperly treated, asthma may cause a long-term decline in lung function.
Asthma is one disease that has two main components occurring deep within the airways of your lungs:
Airway Constriction. The muscles around the airways in the lungs squeeze together or tighten. This tightening is often called “broncho constriction,” and it can make it hard for you to breathe the air in or out of your lungs.
Airway Inflammation. The airways of the lungs are always inflamed if you have asthma, and they become
more swollen and irritated when an attack begins. Your healthcare professional may refer to this swelling as “inflammation.” Inflammation can reduce the amount of air that you can take in or breathe out of your lungs. In some cases, the mucous glands in the airways produce excessive, thick mucus, further obstructing the airways.
Airway constriction and inflammation together cause narrowing of the airways, which can result in wheezing, coughing, chest tightness, or shortness of breath. In people with asthma, the airways are inflamed even when you’re not having symptoms.
In general, there are two types of medications for treating asthma — preventative and quick-relief medications (also called “rescue medications”). Preventative medications, such as inhaled corticosteroids, are used daily to help relieve inflammation and prevent symptoms from occurring. Quick-relief medications are used to relieve constriction of muscles in the airways during an asthma attack.
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More Information:
- Click Here!“>Asthma, (Interactive Tuturial), Patient Education Institute
