Correlation of Indoor Air Pollutants with Pulmonary Function Test in Children Residing in Biomass Fuel Using Rural Houses of Central Karnataka

Abstract

Abstract Background and Objectives: Approximately half the world uses biomass fuel for domestic energy, resulting in widespread exposure to indoor air pollution from biomass smoke. It is not clear what relationship exists between biomass use and pulmonary function. The aim of this study was to evaluate the effects of chronic exposure to biomass fuel smoke in children on pulmonary function test (PFT) parameters and its association with the particulate matter load. Materials and Methods: Children residing in rural houses in Central Karnataka using biomass fuel for cooking and heating water were selected and evaluated for PFTs by RMS Helios 401 spirometer. Particulate matter <2.5 (PM2.5) concentrations were measured using an air quality pollution monitor. The association between PM2.5 and lung functions was studied. Results: A total of 150 children were included in the study. The study participants were assessed for the amount of exposure to particulate matter. Significant exposure to PM2.5 and hydrocarbons with a mean exposure of 42.25 mcg/m3 and 160.47 mg/m3, respectively, was recorded. Exposure to formaldehyde in the kitchen and living area showed a statistically significant decrease in forced vital capacity (FVC) and forced expiratory volume 1 (FEV1) and a normal FEV1/FVC ratio indicating a restrictive pattern. It also showed a statistically significant effect on forced expiratory flow 25%–75% indicating a small airway obstructive pattern. Conclusion: Long-term exposure to PM2.5 and formaldehyde from biomass fuel burning is associated with reduced lung function. This study reinforces the urgency of global strategies to mitigate indoor air pollution for the improvement of pulmonary health.