A study of exercise-induced bronchial hyperreactivity in patients with rhinosinusal pathology.

Bronchial hyperreactivity is an increased response to different stimuli, with the corresponding edema, hypersecretion or dyscrinia and bronchospasm. There are many techniques to provoke bronchial hyperreactivity. The exercise challenge is a simple technique which has certain advantages so as to be chosen as a method especially for a pediatric group. In the present study, we analyzed the response to exercise in 21 children with rhinosinusal pathology but without any bronchial pathology. To evaluate this, we studied the pre- and post-exercise spirometries and airway resistances. As results, 75% of the patients presented with an increase in airway resistance (Raw) after exercise.