[Bronchial obstruction and bronchial hyperreactivity as a cause of difficulty in breathing that depends on burden and...

356 male patients (non-suffering from the lungs, recidivity-bronchitis or chronic bronchitis) were interrogated about the presence of difficulty in breathing that depends on burden and weather, and these patients were investigated for detection of a bronchial obstruction and a bronchial hyperreactivity. With the increased degree of a manifest bronchial obstruction a high-significant increase in frequency of load-dyspnea was demonstrated. On the other hand a significant increase of difficulty in breathing that depends on weather can be obtained only in patients with bronchial hyperreactivity. To estimate more differentiated the difficulty in breathing about which the patients pointed out, an investigation by means of the acetylcholine test is necessary.