Airway Reactivity Score in Asthmatic Patients


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The Airway Reactivity Score (ARS) is a clinical assessment of airway responsiveness in patients with stable chronic bronchial asthma. It is the percent of 22 common irritants causing or worsening asthmatic symptoms in susceptible individuals during a given time period. It correlates with methacholine hyperresponsiveness, with high airway reactivity scores associated with airway hyperresponsiveness at low methacholine concentrations. The Airway Reactivity Score correlates with the Disease Severity Score.

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