[Hyperventilation and airway resistance. Bronchial spasms after hyperventilation].

Abstract

Airway resistance, FEV1.0 and lung volume were measured by body plethysmography before and after voluntary hyperventilation. In normal subjects, resistance increased to 130--140% of the initial value measured before hyperventilation. The same increase was observed in silicosis patients without chronic obstructive bronchitis. Asthmatic patients in an… (More)

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