Association Between Body Mass Index and Bronchodilator Responsiveness in Adults with Chronic Bronchitis

Strategic Insights -

Research conducted by University Peruana Cayetano Heredia has shed new light on the relationship between body mass index (BMI) and bronchodilator responsiveness (BDR) in adults suffering from chronic bronchitis and asthma. The study, which analyzed data from two cohort studies in Peru, Chile, Uruguay, and Argentina, found a differential relationship between BMI and types of BDR. The findings suggest that higher BMI is associated with increased FVC-specific responsiveness in individuals with chronic bronchitis, while lower BMI is linked to FEV- and FVC-specific responsiveness in those with asthma and chronic bronchitis.

Key Takeaways:

  • The study analyzed data from 7,160 participants, with 55.2% being men and a mean age of 57.3 years.
  • 23.7% of participants had a BMI ≥ 25, indicating overweight or obesity.
  • The researchers defined BDR as a 12% and 200 mL increase in either forced expiratory volume in one second (FEV) or forced vital capacity (FVC) after administration of a short-acting bronchodilator.
  • The analysis distinguished between FEV- and FVC-specific BDR and used logistic regression adjusted for confounders to evaluate associations with BMI.
  • The study found a differential relationship between BMI and types of BDR, with higher BMI associated with FVC-specific responsiveness in individuals with chronic bronchitis.
  • Lower BMI was linked to FEV- and FVC-specific responsiveness in individuals with asthma and chronic bronchitis.
  • The study's findings were based on data from two cohort studies in four South American countries.

Statistics:

  • 7,160 participants were included in the analysis.
  • 55.2% of participants were men, and the mean age was 57.3 years.
  • 23.7% of participants had a BMI ≥ 25.
  • 12% and 200 mL increase in FEV or FVC were used to define BDR.
  • FEV- and FVC-specific BDR were distinguished and evaluated using logistic regression adjusted for confounders.

Sources:

  • Chronic Obstructive Pulmonary Diseases-journal of the Copd Foundation. "Body Mass Index and Bronchodilator Responsiveness in Adults: Analysis of 2 Population-Based Studies in 4 South American Countries."
  • University Peruana Cayetano Heredia. "Reports Outline Chronic Bronchitis Findings from University Peruana Cayetano Heredia (Body Mass Index and Bronchodilator Responsiveness in Adults: Analysis of 2 Population-Based Studies in 4 South American Countries)."