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(Chest. 1968;53:126-132.)
© 1968 American College of Chest Physicians

The Reversibility of Chronic Bronchitis, Asthma and Emphysema

James W. Morton M.D.1 and Kenneth W. Turnbull B.A.1

1 Respiratory Function Laboratory, Department of Medicine, University of British Columbia

1. The response to a bronchodilator of a series of patients with asthma, chronic bronchitis, emphysema, or a combination of these has been studied and compared with a group of patients suffering from other miscellaneous conditions.

2. Although the mean improvement after a bronchodilator in patients with asthma alone or combined with chronic bronchitis is significantly better than the improvement in chroni bronchitis alone or combined with emphysema, the degree of overlap is so great that a diagnosis based on reversibility is of little use in the individual case.

3. The additive effects of a bronchodilator and corticosteroids in asthma alone or combined with chronic bronchitis have been demonstrated.






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Copyright © 1968 by the American College of Chest Physicians.