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    Lung function in African infants: A pilot study

    Access Status
    Open access via publisher
    Authors
    Gray, D.
    Willemse, L.
    Alberts, A.
    Simpson, S.
    Sly, P.
    Hall, Graham
    Zar, H.
    Date
    2015
    Type
    Journal Article
    
    Metadata
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    Citation
    Gray, D. and Willemse, L. and Alberts, A. and Simpson, S. and Sly, P. and Hall, G. and Zar, H. 2015. Lung function in African infants: A pilot study. Pediatric Pulmonology. 50 (1): pp. 49-54.
    Source Title
    Pediatric Pulmonology
    DOI
    10.1002/ppul.22965
    ISSN
    8755-6863
    School
    School of Physiotherapy and Exercise Science
    URI
    http://hdl.handle.net/20.500.11937/54788
    Collection
    • Curtin Research Publications
    Abstract

    Background: The burden of childhood respiratory illness is large in low and middle income countries (LMICs). Infant lung function (ILF) testing may provide useful information about lung growth and susceptibility to respiratory disease. However, ILF has not been widely available in LMICs settings where the greatest burden of childhood respiratory disease occurs. Aim To implement and evaluate a pilot study of ILF testing in a semi-rural setting in South Africa. Method: Infant lung function testing was established at a community hospital in South Africa. All measures were done in unsedated infants during sleep. Measurements, made with the infant quietly breathing through a face mask and bacterial filter, included tidal breathing (TBFVL), exhaled nitric oxide (eNO), and sulphur hexafluoride multiple breath washout (MBW) measures using an ultrasonic flow meter and chemoluminescent NO analyzer. Results: Twenty infants, mean age of 7.7 (SD 2.9) weeks were tested; 8 (40%) were Black African and 12 (60%) were mixed race. Five (25%) infants were preterm. There were 19 (95%) successful TBFVL and NO tests and 18 (90%) successful MBW tests. The mean tidal volume was 30.5 ml (SD 5.9), respiratory rate 50.2 breaths per minute (SD 8.7), and eNO 10.4 ppb (SD 7.3). The mean MBW measures were: functional residual capacity 71 ml (SD 13) and the lung clearance index 7.6 (SD 0.5). The intra-subject coefficient of variations (CV) of lung function measures were similar to published normative data for Caucasian European infants. Conclusion: In this study we demonstrate that unsedated infant lung function measures of tidal breathing, MBW, and eNO are feasible in a semi-rural African setting with rates comparable to those reported from high income countries.

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