ERS technical standard on bronchial challenge testing: General considerations and performance of methacholine challenge tests

Allan L. Coates*, Jack Wanger, Donald W. Cockcroft, Bruce H. Culver, Kai-Hakon Carlsen, Zuzana Diamant, Gail Gauvreau, Graham L. Hall, Teal S. Hallstrand, Ildiko Horvath, Frans H. C. de Jongh, Guy Joos, David A. Kaminsky, Beth L. Laube, Joerg D. Leuppi, Peter J. Sterk, Bronchoprovocation Testing Task Fo

*Corresponding author for this work

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    Abstract

    This international task force report updates general considerations for bronchial challenge testing and the performance of the methacholine challenge test. There are notable changes from prior recommendations in order to accommodate newer delivery devices. Rather than basing the test result upon a methacholine concentration (provocative concentration (PC20) causing a 20% fall in forced expiratory volume in 1 s (FEV1)), the new recommendations base the result upon the delivered dose of methacholine causing a 20% fall in FEV1 (provocative dose (PD20)). This end-point allows comparable results from different devices or protocols, thus any suitable nebuliser or dosimeter may be used, so long as the delivery characteristics are known. Inhalation may be by tidal breathing using a breath-actuated or continuous nebuliser for 1 min (or more), or by a dosimeter with a suitable breath count. Tests requiring maximal inhalations to total lung capacity are not recommended because the bronchoprotective effect of a deep breath reduces the sensitivity of the test.

    Original languageEnglish
    Number of pages17
    JournalEuropean Respiratory Journal
    Volume49
    Issue number5
    DOIs
    Publication statusPublished - May-2017

    Keywords

    • INHALATION PROVOCATION TESTS
    • INDUCED BRONCHOCONSTRICTION
    • AIRWAY RESPONSES
    • CYSTIC-FIBROSIS
    • LUNG-FUNCTION
    • INHALED METHACHOLINE
    • ASTHMATIC-CHILDREN
    • HIGH PREVALENCE
    • PARTICLE-SIZE
    • HISTAMINE

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