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Signal-correction errors in the EasyOne Pro LAB multiple-breath washout device significantly impact outcomes in children and adultsMultiple-breath washout (MBW) is an established technique to assess functional residual capacity (FRC) and ventilation inhomogeneity in the lung. Indirect calculation of nitrogen concentration requires accurate measurement of gas concentrations.
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Ventilatory response and stability of oxygen saturation during a hypoxic challenge in very preterm infantsPreterm infants have immature control of breathing and impaired pulmonary gas exchange. We hypothesized that infants with bronchopulmonary dysplasia (BPD) have a blunted ventilatory response and peripheral oxygen saturation (SpO2 ) instability during a hypoxic challenge.
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Multi-ancestry genome-wide association analyses improve resolution of genes and pathways influencing lung function and chronic obstructive pulmonary disease riskLung-function impairment underlies chronic obstructive pulmonary disease (COPD) and predicts mortality. In the largest multi-ancestry genome-wide association meta-analysis of lung function to date, comprising 580,869 participants, we identified 1,020 independent association signals implicating 559 genes supported by ≥2 criteria from a systematic variant-to-gene mapping framework. These genes were enriched in 29 pathways. Individual variants showed heterogeneity across ancestries, age and smoking groups, and collectively as a genetic risk score showed strong association with COPD across ancestry groups.
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Single-breath washout and association with structural lung disease in children with cystic fibrosisAcinar ventilation inhomogeneity measured by single-breath washout was not associated with structural lung disease on CT
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Early life exposure to coal mine fire smoke emissions and altered lung function in young childrenInfant exposure to coal mine fire emissions could be associated with long-term impairment of lung reactance
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Impact of HIV and antiretroviral drug exposure on lung growth and function over 2 years in an African Birth CohortHIV exposure is associated with altered lung function in early life, with a vulnerable HIV-exposed uninfected subgroup based on maternal disease severity
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Associations between respiratory and vascular function in early childhoodThe link between respiratory and vascular health is well documented in adult populations. Impaired lung function is consistently associated with thicker arteries and higher incidence of cardiovascular disease. However, there are limited data on this relationship in young children and the studies that exist have focussed on populations at high risk of cardiorespiratory morbidity.
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Reference values for spirometry and their use in test interpretation: A Position Statement from the Australian and New Zealand Society of Respiratory ScienceThe ANZSRS recommends the adoption of the Global Lung Function Initiative (GLI) 2012 spirometry reference values throughout Australia and New Zealand
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Consensus statement for inert gas washout measurement using multiple- and single- breath testsInert gas washout tests, performed using the single- or multiple-breath washout technique, were first described over 60 years ago.
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Crowding and other strong predictors of upper respiratory tract carriage of otitis media-related bacteriaStreptococcus pneumoniae, Moraxella catarrhalis, and nontypeable Haemophilus influenzae is associated with otitis media