Bronchial reactivity in patients with primary and recurrent pneumonias

: Results are submitted of analysis of the external respiration function in rest, under cold test and berotec test in 308 patients with primary pneumonia and 233 patients with recurrent pneumonia. A prominent feature of recurrent pneumonia (unlike the primary one) is the presence of obstruction of the lungs and middle bronchi presenting with hyperreactivity to the cold test and poor response to the broncholytic berotec.