Tag: methacholine (Page 2)

Normal Range of Methacholine Responsiveness in Relation to Prechallenge Pulmonary Function: Analysis

Methacholine inhalation challenge testing was performed as previously described. Solutions were aerosolized by a nebulizer (DeVilbiss 646) powered by an air compressor (DeVilbiss). All inhalations were 6-s vital capacity inhalations followed by 2 s of breathholding. Seconds were counted aloud from a digital stopwatch after careful instruction and practice. Inhalations were done seated and wearing […]

Normal Range of Methacholine Responsiveness in Relation to Prechallenge Pulmonary Function

Methacholine challenge testing is currently being used as a diagnostic test for a variety of clinical indications. In patients presenting with chronic cough of uncertain cause, challenge testing has been advocated as a means to determine whether the cough is associated with airway hyperresponsiveness (“cough variant asthma”) and likely to respond to bronchodilator therapy. Methacholine […]