Lung Function Parameters among Adult Bangladeshi Population.

Area of Science:

• Pulmonary Medicine
• Clinical Physiology

Background:

• Standard lung function parameters from Western populations are not applicable to the Bangladeshi population.
• Accurate spirometry reference values are essential for diagnosing and managing respiratory diseases.

Purpose of the Study:

• To establish valid and up-to-date spirometry predictive values for the general population in Bangladesh.
• To investigate lung function differences between males and females in Bangladesh.

Main Methods:

• A cross-sectional observational study involving 627 participants in Bangladesh.
• Spirometry measurements (FEV₁, FVC, FEV₁/FVC, FEF 25-75%) conducted using an Easy One Air Spirometer.
• Adherence to American Thoracic Society (ATS) guidelines for spirometry procedures.

Main Results:

• Lung function parameters showed significant differences between males and females.
• Females exhibited higher lung volumes than males, while males had higher forced expiratory flow (FEF).
• Lung function parameters negatively correlated with age; forced vital capacity also negatively correlated with body mass index.

Conclusions:

• Established spirometry reference values are crucial for the Bangladeshi population.
• Sex-based differences in lung function are evident in Bangladesh.
• Age and, to some extent, BMI are important factors influencing lung function in this population.