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Ventilatory lung function studies in Pacific Island Micronesians

P Brown, D Sadowsky, D C Gajdusek

    American Journal of Epidemiology
    |October 1, 1978
    PubMed
    Summary
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    This study established lung function norms for Micronesians, revealing lower FVC and FEV1 but comparable FEV1% to other races. These racial norms aid in diagnosing pulmonary diseases in Oceanic populations.

    Area of Science:

    • Pulmonary Medicine
    • Anthropometry
    • Racial Physiology

    Background:

    • Ventilatory lung function varies across different racial groups.
    • Establishing racial-specific norms is crucial for accurate diagnosis of pulmonary conditions.

    Purpose of the Study:

    • To determine ventilatory lung function reference equations for Micronesian adults.
    • To compare Micronesian lung function parameters with other racial groups.
    • To assess the impact of aging on lung function in Micronesians.

    Main Methods:

    • Collected data on forced vital capacity (FVC), forced expiratory volume in 1 second (FEV1), and FEV1% from 182 healthy Micronesians (117 males, 65 females) aged 15-80.
    • Calculated regression equations for FVC, FEV1, and FEV1% based on age and sex.

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  • Compared mean values and age-related changes with existing data from Caucasian, Polynesian, Melanesian, Black, and Chinese populations.

    • Main Results:

    • Micronesians exhibited lower mean FVC and FEV1 values compared to Caucasians and Polynesians, but similar to Melanesians, Black, and Chinese populations.
    • FEV1% values were comparable across all studied racial groups.
    • Micronesian populations showed a less pronounced decline in FVC and a greater decline in FEV1% with increasing age compared to Caucasians.

    Conclusions:

    • The study provides the first ventilatory lung function reference equations for Micronesians.
    • Observed racial variations in lung function, particularly age-related changes, highlight the need for race-specific reference values.
    • These newly defined racial norms are valuable for identifying and managing pulmonary airway diseases in Oceanic peoples.