[Bronchial hyperreactivity to physiological saline solution]

A case of a 10-year old boy suffering from asthma bronchiale following pleuropneumonia is reported. Paradoxically, bronchospasmolysis tests using physiological saline + salbutamol or ipratropium bromide impaired the lung function of this patient. Salt solutions inhaled in increasing doses until 1.4% generated severe bronchoconstriction, however, inhalation of DNCG + salbutamol normalized the lung function completely.