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(Chest. 1965;48:262-264.)
© 1965 American College of Chest Physicians

Expiratory and Inspiratory Flow Rates in Chronic Obstructive Pulmonary Disease

M. Henry Williams Jr. M.D.1 and Cecile Kane 1

1 Department of Medicine and Unit for Research in Aging, Albert Einstein College of Medicine and Chest Service, Department of Medicine, Bronx Municipal Hospital Center

Measurements of inspiratory and expiratory flow rates were performed on patients with asthma, bronchitis, emphysema and heart disease. In all patients, reduction of expiratory flow rate was associated with increase of the ratio of inspiratory to expiratory flow rate, and this ratio was of no value in distinguishing between the four conditions.







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Copyright © 1965 by the American College of Chest Physicians.