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Asthma

  • William J. Ray
  • James M. Raczynski
  • Todd Rogers
  • William H. Kimball

Abstract

Asthma is a respiratory disorder characterized by shortness of breath, labored breathing, and wheezing. Onset occurs typically in childhood and the disorder may persist throughout the individual’s life (Feldman, 1976; Khan, 1977). While the exact physiological etiology of asthma is not known, it is apparent that asthma involves a hypersensitivity to allergens as well as emotional factors. Asthma is associated with an obstruction of the bronchioles by smooth muscle spasms and narrowing of bronchiolar walls. This resistance may cause the asthmatic to begin an inhalation before he or she has finished exhaling. Consequently, asthmatics have higher respiratory resistance levels and lowered levels of respiration, as measured by peak expiratory flow rates (PEFR) or forced expiratory volume (FEV) (Danker, Miklich, Pratt, & Creer, 1973).

Keywords

Asthmatic Child Emergency Room Visit Force Expiratory Volume Peak Expiratory Flow Rate Asthmatic Attack 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Plenum Press, New York 1979

Authors and Affiliations

  • William J. Ray
    • 1
  • James M. Raczynski
    • 1
  • Todd Rogers
    • 1
  • William H. Kimball
    • 1
  1. 1.The Pennsylvania State UniversityUniversity ParkUSA

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