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Background and objectiveAirway hyperresponsiveness is a common feature of asthma. Methacholine and mannitol are two representative agonists for bronchial challenge. They have theoretically different mechanisms of action, and may have different diagnostic properties. However, their difference has not been directly evaluated among Korean adults. In this study, we compare the diagnostic properties of...
Background and objectiveXenon ventilation computed tomography (CT) has shown potential in assessing the regional ventilation status in subjects with asthma. The purpose of this study was to evaluate the usefulness of xenon ventilation CT in the management of asthma in the elderly.
MethodsTreatment‐naïve asthmatics aged 65 years or older were recruited. Before initiation of medication, spirometry...
Background and objective: Reactivation of hepatitis B virus (HBV) is thought to be associated with immunosuppressive treatments, but insufficient information is available on the effect of corticosteroids. The aim of this study was to evaluate the risk of HBV reactivation in hepatitis B surface antigen‐seropositive patients with asthma or COPD, who were treated with systemic corticosteroids (SCS)...
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