What is asthma?
Asthma is a chronic inflammatory disorder of the airways within the lungs.
Asthma affects over 17 million people in the United States but is not a western only disease.
for the long term: some medications are taken daily to maintain control of persistent asthma.
They primarily serve to treat the airway inflammation.
The quick-relief sort term medications are taken to achieve prompt reversal of an
asthma "attack" by relaxing bronchial smooth muscle which contract at an asthma attack.
Many asthma medications are applied orally or by inhalation.
Metered-dose inhalers (MDI’s) are the most widely used method, but dry powder inhalers popular these days too.
Metered-dose inhalers are changing from the type propelled by liquified chlorofluorocarbons (CFCs) to a new,
CFC-free delivery system (see the National Heart Lung and Blood Institute review on the new MDIs.
Nebulizer therapy is reserved for patients who are unable to use MDI’s because of difficulties with coordination.