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Spirometric values for normal Perth children aged six to twelve years.

A R Morton, K D Fitch, B A Blanksby

    Australian and New Zealand Journal of Medicine
    |February 1, 1976
    PubMed
    Summary

    This study established spirometric norms for Perth children aged 6-12 years, using anthropometric data to predict lung function. Height and mass were key predictors for forced vital capacity (FVC) and forced expiratory volume in one second (FEV1).

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    Area of Science:

    • Pediatric Pulmonology
    • Respiratory Physiology
    • Anthropometry

    Background:

    • Establishing accurate spirometric reference values is crucial for diagnosing pediatric respiratory conditions.
    • Existing spirometric norms may not fully represent diverse pediatric populations.
    • Anthropometric measurements are known to correlate with lung function parameters.

    Purpose of the Study:

    • To construct tables and nomograms of spirometric norms for children aged 6-12 years in Perth.
    • To base these norms on anthropometric measurements (height, mass, arm span) and age.
    • To evaluate the correlation between ventilatory parameters and anthropometric data.

    Main Methods:

    • Spirometry was performed on 556 children (289 boys, 267 girls) aged 6-12 years using a dry spirometer.

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  • Measured parameters included Forced Vital Capacity (FVC), Forced Expiratory Volume in one second (FEV1), and Forced Mid-Expiratory Flow (FMF).
  • Correlation coefficients were calculated between ventilatory parameters and anthropometric measurements; multiple regression analysis was employed.

    • Main Results:

    • High correlations were observed between FVC, FEV1 and height, mass, arm span, and age in both sexes.
    • Moderately high correlations were found between FMF and these anthropometric measures.
    • Height was the best single predictor; height plus mass provided the best prediction for FVC and FEV1 (both sexes) and FMF (girls).

    Conclusions:

    • Spirometric norms derived from anthropometric data (height, mass) can reliably predict lung function in children.
    • The established tables and nomograms provide valuable tools for assessing pediatric respiratory health.
    • Ventilatory values showed minimal differences compared to European and Eastern Australian children, suggesting broader applicability of the norms.