Nitrogen back-diffusion during multiple-breath washout with 100% oxygen
نویسندگان
چکیده
منابع مشابه
A Systematic Approach to Multiple Breath Nitrogen Washout Test Quality
BACKGROUND Accurate estimates of multiple breath washout (MBW) outcomes require correct operation of the device, appropriate distraction of the subject to ensure they breathe in a manner representative of their relaxed tidal breathing pattern, and appropriate interpretation of the acquired data. Based on available recommendations for an acceptable MBW test, we aimed to develop a protocol to sys...
متن کاملMultiple Breath Nitrogen Washout: A Feasible Alternative to Mass Spectrometry
BACKGROUND The lung clearance index (LCI), measured by multiple breath washout (MBW), reflects global ventilation inhomogeneity and is a sensitive marker of early cystic fibrosis (CF) lung disease. Current evidence is based on a customized mass spectrometry system that uses sulfur hexafluoride (SF6) as a tracer gas, which is not widely available. Nitrogen (N2) washout may be better suited for c...
متن کاملCorrecting for tissue nitrogen excretion in multiple breath washout measurements
Nitrogen excreted from body tissues impacts the calculation of multiple breath nitrogen washout (MBWN2) outcomes. The aim of this study was to determine the effect of tissue N2 on MBWN2 outcomes in both healthy subjects and patients with CF and to assess whether it is possible to correct for tissue N2. The contribution of tissue N2 to MBWN2 outcomes was estimated by comparing MBWN2-derived func...
متن کاملEquipment for multiple breath washout.
5 Demeo DL, Campbell EJ, Barker AF, et al. IL10 polymorphisms are associated with airflow obstruction in severe alpha1-antitrypsin deficiency. We read with interest the article ''Paediatrics in Berlin'' [1] in a recent issue of the European Respiratory Journal, which sum-marised the paediatric topics of the European Respiratory Society's Annual Congress in Berlin. In this article, inert gas mul...
متن کاملLeaks during multiple-breath washout: characterisation and influence on outcomes
Nitrogen multiple-breath washout (N2MBW) is increasingly used in patients with cystic fibrosis. The current European Respiratory Society/American Thoracic Society consensus statement for MBW recommends the rejection of measurements with leaks. However, it is unclear whether this is necessary for all types of leaks. Here, our aim was to 1) model and 2) apply air leaks, and 3) to assess their inf...
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ژورنال
عنوان ژورنال: European Respiratory Journal
سال: 2017
ISSN: 0903-1936,1399-3003
DOI: 10.1183/13993003.00679-2017