Acute and chronic changes in pulmonary functions among Indian textile workers

Area of Science:

• Occupational Health
• Pulmonology
• Epidemiology

Background:

• Textile mill workers are exposed to cotton dust, a known respiratory irritant.
• Byssinosis is a lung disease caused by prolonged exposure to cotton dust.
• The impact of cotton dust on pulmonary function, particularly in byssinotic individuals, requires further investigation.

Purpose of the Study:

• To investigate the acute and chronic effects of cotton dust exposure on pulmonary function.
• To compare the effects of cotton dust exposure on byssinotic workers versus non-byssinotic workers.
• To assess the relative impact of cotton dust exposure compared to smoking on lung function.

Main Methods:

• An epidemiological study was conducted in three Ahmedabad textile mills.
• 214 cotton dust-exposed workers and 184 control subjects were enrolled.
• Pulmonary function tests, including forced vital capacity and forced expiratory volume in one second, were performed using a vitalograph spirometer before and after a 7-hour shift.

Main Results:

• Cotton dust-exposed workers, particularly those with byssinosis, exhibited distinct pulmonary function changes.
• Significant acute and chronic alterations in lung function were observed in byssinotic subjects.
• The detrimental effects of cotton dust exposure on lung function appeared more significant than those of smoking.

Conclusions:

• Cotton dust exposure poses a substantial risk to respiratory health in textile workers.
• Byssinotic individuals are particularly vulnerable to the adverse pulmonary effects of cotton dust.
• Occupational exposure to cotton dust is a more critical factor for lung function impairment than smoking in this cohort.