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Spirometric reference values in Senegalese black adults.

P Dufétel1, B Pigearias, J Lonsdorfer

  • 1Laboratory of Physiology, School of Medicine, Lome, Togo.

The European Respiratory Journal
|April 1, 1989
PubMed
Summary

New spirometric reference values for Black Africans show significant differences compared to White populations. These findings highlight the need for distinct pulmonary function standards for diverse ethnic groups.

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Area of Science:

  • Pulmonary Medicine
  • Anthropometry
  • African Health

Background:

  • Spirometry is crucial for diagnosing respiratory diseases.
  • Existing pulmonary function reference values are predominantly based on Caucasian populations.
  • Ethnic variations in lung function necessitate the development of specific reference standards.

Purpose of the Study:

  • To establish spirometric reference equations for Senegalese adults.
  • To compare pulmonary function parameters between Black Africans and other ethnic groups.
  • To determine the applicability of Caucasian spirometric standards to Black Africans.

Main Methods:

  • Spirometry was performed on 448 Senegalese males and females aged 25-80 years.
  • Measurements included lung volumes and expiratory flows.

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  • Regression equations and nomograms were developed using age and height.

    • Main Results:

    • Senegalese subjects exhibited lower spirometric volumes (15-25% in males, 23% in females) compared to Caucasians.
    • Forced expiratory flow between 25-75% of vital capacity (FEF25-75) was reduced in males (5-18%) and females (19%).
    • FEF25-75/VC ratio was higher in Black Africans, while FEV1/VC ratio was similar to Whites.

    Conclusions:

    • Spirometric values in Senegalese adults are distinct from those of Caucasian populations.
    • Proportional adjustments are insufficient for applying Caucasian standards to Black Africans.
    • Proposed regression equations and nomograms provide accurate reference values for Black African populations.