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methacholine challenge |
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methacholine challenge [meth′əkō′lēn] a method of measuring airway activity by an inhalation challenge test. The patient inhales a saline aerosol as a control, followed by increasing concentrations of methacholine chloride, a cholinergic drug. The test is used to confirm the diagnosis of asthma when symptoms are not present. This is a potentially dangerous test and should be performed only by qualified personnel, with resuscitation equipment readily available. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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