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Ventilatory function in normal Nigerian school children.

B O Onadeko, A A Iyun, E O Sofowora

    African Journal of Medicine and Medical Sciences
    |March 1, 1979
    PubMed
    Summary
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    This study determined normal lung function values for Nigerian school children. Results showed lower forced vital capacity (FVC) and forced expiratory volume in 1 second (FEV1) compared to predicted values.

    Area of Science:

    • Pediatric Pulmonology
    • Public Health
    • Anthropometry

    Background:

    • Establishing normative data for lung function is crucial for identifying respiratory abnormalities in children.
    • Previous studies have indicated potential ethnic and environmental variations in lung function parameters.
    • Limited data exists on lung function values specifically for Nigerian school-aged children.

    Purpose of the Study:

    • To determine reference values for lung function tests in Nigerian school children.
    • To compare these values with established international standards.
    • To investigate the correlation of lung function parameters with anthropometric measurements.

    Main Methods:

    • Lung function parameters, including forced vital capacity (FVC) and forced expiratory volume in 1 second (FEV1), were measured in 522 school children (257 boys, 265 girls) aged 7-18 years in Ibadan.

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  • Measurements were conducted using a wedge bellows vitalograph.
  • Data were analyzed to establish mean values and compare them with predicted values based on age, sex, height, and weight.

    • Main Results:

    • The mean FVC and FEV1 values observed in Nigerian children were lower than predicted values matched for age, sex, height, and weight.
    • These values were also found to be lower than those reported for Caucasian children.
    • A significant positive correlation (P < 0.01) was found between FVC and age, weight, and height.

    Conclusions:

    • The study establishes lower-than-expected baseline lung function values for Nigerian school children.
    • These findings highlight the need for region-specific reference standards for lung function assessment in this population.
    • Age, height, and weight are significant predictors of lung function (FVC) in Nigerian children.