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Bronchial provocation tests

This is the most modern test of bronchial reactivity which is less prone to false negative results than other traditional bronchial challenge tests. Bronchial provocation tests are commonly performed to assist with the diagnosis and treatment of asthma.

Increasing doses of a simple sugar (mannitol) impregnated with a dehydrating agent are inhaled at specific intervals and are intended to mimic the effects of physical exercise on the airways. Dehydration of the airways in this way will trigger a cascade of physiological processes which cause the smooth muscle in the bronchial airways to contract, akin to the effects of asthma. Spirometric measurements are conducted after each dose inhalation to gauge airway constriction.

A positive response is suggestive of active airway inflammation and airway hyperresponsiveness that is consistent with a diagnosis of asthma.

View test withholding preparation.

For more information or to book a Bronchial Provocation Test, call The Lung Centre on 07 5564 7775 or fill out the contact form below.

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