Abstract

Background: Carbon block is possibly carcinogenic to humans. Short-term exposure to high concentrations of carbon black dust may produce discomfort to the upper respiratory tract, through mechanical irritation. Aims and
Objective: This study aims to evaluate the impact of the carbon block on the peak expiratory flow rate (PEFR) using Wright’s peak flow meter.
Materials and Methods: Peak flow meter was done by Wright’s peak flow meter. The paired t-test was done to determine the significant difference between the employees and controls.
Results: Peak flow rate was decreased with the duration of the work exposure in the workers compared to controls. Conclusion: Impairement of Peak Expiratory Flow Rate in carbon rod making workers due to long term exposure of carbon dust.