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Normal spirometric reference values for Omani children and adolescents.

Bazdawi M Al-Riyami1, Omar A Al-Rawas, Mohammed O Hassan

  • 1Department of Medicine, College of Medicine and Health Sciences, Sultan Qaboos University, Muscat, Sultanate of Oman.

Respirology (Carlton, Vic.)
|September 15, 2004
PubMed
Summary

This study established normal spirometric values for Omani children and adolescents, finding significant differences between sexes and ethnic groups. The derived equations are crucial for accurate lung function assessment in Oman.

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Area of Science:

  • Pediatric Pulmonology
  • Respiratory Physiology
  • Public Health

Background:

  • Lung function varies significantly across different populations.
  • Establishing population-specific reference values is essential for accurate diagnosis.

Purpose of the Study:

  • To derive normal reference spirometric values for Omani children and adolescents.
  • To develop prediction equations for lung function parameters in this demographic.

Main Methods:

  • Spirometry was performed on 837 healthy Omani children aged 6-19 years.
  • Measurements included forced vital capacity (FVC) and forced expiratory volume in 1 second (FEV1).
  • Multiple linear regression analysis was used, considering age, height, and weight for both sexes.

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Main Results:

  • All spirometric parameters increased with age and height, being higher in boys than girls.
  • Height was the primary determinant of lung function parameters.
  • Predicted values were 5-10% lower than Caucasian reference groups, with the FEV1/FVC ratio higher in girls.

Conclusions:

  • New prediction equations for spirometric values in Omani children and adolescents were developed.
  • These equations are suitable for clinical use in Oman.
  • The findings may also be relevant for neighboring Arab countries.