Tuberculosis associates with both airflow obstruction and low lung function: BOLD results

Area of Science:

• Pulmonary Medicine
• Epidemiology
• Respiratory Health

Background:

• Previous small studies suggest a link between tuberculosis history and lung function abnormalities.
• Airflow obstruction characterizes chronic obstructive pulmonary disease (COPD).
• Restrictive patterns on spirometry have also been observed in individuals with a tuberculosis history.

Purpose of the Study:

• To investigate the association between a history of tuberculosis and airflow obstruction.
• To assess the relationship between tuberculosis history and spirometric abnormalities, including restriction.
• To evaluate these associations in adults aged 40 and above.

Main Methods:

• Cross-sectional, population-based study (Burden of Obstructive Lung Disease).
• Inclusion of adults aged 40+ with spirometry data and tuberculosis history.
• Meta-analysis of data from participating centers, stratified by country income level.

Main Results:

• Self-reported tuberculosis history was significantly associated with airflow obstruction (aOR 2.51).
• A history of tuberculosis was also associated with spirometric restriction (aOR 2.13).
• Associations were consistent across different country income levels.

Conclusions:

• A history of tuberculosis is a significant risk factor for both airflow obstruction and restrictive lung function.
• Tuberculosis should be considered a potential cause of obstructive lung disease and reduced lung function.
• Public health strategies should address the long-term respiratory consequences of tuberculosis, particularly in high-prevalence areas.