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  Asthma Multimedia
from HONselect:

 Asthma image

 Status Asthmaticus
 Asthma, Exercise-Induced


Asthma can be defined clinically as a condition of intermittent, reversible airway constriction, due to a hyperreactivity to certain substances producing inflammation .
In an asthma attack the smooth muscles of the lungs go into spasm with the surrounding tissue inflammed and secreting mucus into the airways. Thus, the diameter of the airways is reduced causing the characteristic wheezing as the person affected breathes harder to get air into the lungs. Attacks can vary in intensity and frequency.
Treatment for asthma includes the following drugs :

Asthma affects about 10 million Americans and seems to be on the increase (between 1982 and 1992 a 42% rise was recorded). Asthma can be divided into two principal types:



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