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Observational analysis measures airway hyperresponsiveness in asthma, COPD, and healthy smokers, suggesting significant respiratory differences.
Background Airway hyperresponsiveness (AHR), a key feature of asthma, leads to airway narrowing in response to bronchoconstrictor stimuli. Notably, AHR is also observed in individuals with chronic obstructive pulmonary disease (COPD). The Mannitol challenge test is an indirect method to assess airway hyperresponsiveness.
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Nasr et al. (2025) studied this question.
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