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2017•European Respiratory JournalOpen access

Is twice the duration of washout sufficient time between multiple breath nitrogen washout tests?

Elizabeth Salamon, Kevin R. Gain, Graham L. Hall

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Abstract

We read the paper by K.M. Hardaker and co-workers with great interest. Their study confirmed our earlier data: that a washout-derived wait time between measurements of nitrogen-based multiple breath washout (MBW) was not influenced by disease severity, and that on average a wait time of twice the duration of the washout between nitrogen MBW tests eliminated potential measurement artefacts [1]. Waiting for multiple breath washout: when is long enough?

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What this paper is about

We read the paper by K.M. Hardaker and co-workers with great interest. Their study confirmed our earlier data: that a washout-derived wait time between measurements of nitrogen-based multiple breath washout (MBW) was not influenced by disease severity, and that on average a wait time of twice the duration of the washout between nitrogen MBW tests eliminated potential measurement artefacts [1]. Waiting for multiple breath washout: when is long enough?

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Available abstract

We read the paper by K.M. Hardaker and co-workers with great interest. Their study confirmed our earlier data: that a washout-derived wait time between measurements of nitrogen-based multiple breath washout (MBW) was not influenced by disease severity, and that on average a wait time of twice the duration of the washout between nitrogen MBW tests eliminated potential measurement artefacts [1]. Waiting for multiple breath washout: when is long enough?

Key concepts: Washout, Nitrogen washout, Medicine, Internal medicine, Functional residual capacity, Lung, Lung volumes

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