Bronchial challenge test

The bronchial provocation test is to use different stimuli to trigger abnormal contraction of the bronchi. Through the quantitative measurement of the stimulus and the corresponding degree of response, the degree of airway hyperresponsiveness can also be judged. Inhaled bronchial challenge test is the most common method used in clinical and experimental studies, including various inhaled non-specific stimuli such as histamine, methacholine, acetylcholine, adenosine, leukotriene E4, hypertonic saline, hypotonic Inhalation of salt water and cold air, as well as specific antigen irritants such as dust mites, pollen, and animal fur.