bronchial

[brong´ke-al]

pertaining to or affecting one or more bronchi.

bronchial challenge test a pulmonary function test in which an aerosol such as methacholine, histamine, or an allergen is administered to provoke bronchospasm; used in diagnosis of asthma.

bronchial challenge test

Any of a group of functional tests for assessing asthma, in which a nebulised agent—e.g., histamine, methacholine—is sprayed on the bronchial mucosa that evokes bronchoconstriction in asthmatics, which is detected by spirometry; BCT is used to establish a baseline pulmonary functional status.

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References in periodicals archive

In order to perform the bronchial challenge test, an inhalation device and capsules (Pharmaxis Ltd., Australia) containing dry powdered mannitol were used.

Cat ownership is associated with increased asthma prevalence and dog ownership with decreased spirometry values

This indicates that "whenever possible, physicians should order objective tests, such as prebronchodilator and postbronchodilator spirometry, serial peak flow measurements, or bronchial challenge tests, to confirm asthma at the time of initial diagnosis," the investigators said.

Asthma ruled out in 33% of diagnosed adults

Bronchial challenge tests were performed with 4.5% sodium chloride according to the ISAAC protocol (Riedler et al.

The relationship between air pollution from heavy traffic and allergic sensitization, bronchial hyperresponsiveness, and respiratory symptoms in Dutch schoolchildren

In a 2004 crossover study, Kimata exposed 20 people with dust mite-allergic bronchial asthma and 20 healthy participants to methacholine in a baseline bronchial challenge test. Two weeks later, each participant was randomly assigned to watch a humorous film or a nonhumorous one.

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