CHRONIC RESPIRATORY SYMPTOMS AND SPIROMETRIC PARAMETERS AMONG PROFESSIONAL DRIVERS - THE IMPACT OF OCCUPATIONAL EXPOSURE AND WORK TENURE
DOI:
https://doi.org/10.53582/32hsk265Keywords:
professional drivers, respiratory symptoms, spirometry, occupational exposureAbstract
Aim. To assess the prevalence of chronic respiratory symptoms, spirometric parameters and the effects of occupational exposure among professional drivers.
Material and methods. A cross-sectional epidemiological study was conducted including 70 male professional drivers and 70 administrative staff matched by age, work tenure, occupational exposure and smoking status. Data on respiratory symptoms, smoking status, occupational exposure to harmful agents and work tenure were collected using a standardized questionnaire. Spirometry was performed to assess lung function.
Results. Professional drivers had a significantly higher prevalence of respiratory symptoms compared to controls, including any respiratory symptom (81.4% vs. 58.6%, p=0.003), nasal symptoms (35.7% vs. 8.6%, p<0.001), cough (61.4% vs 34.3%, p=0.002), cough with phlegm (37.1% vs. 20.0%, p=0.040), dyspnea (31.4% vs. 17.1%, p=0.049) and wheezing (25.7% vs. 7.1%, p=0.006). All spirometric parameters were significantly lower in drivers, indicating involvement of both large and small airways (p<0.05). Drivers with ≥ 20 years of work tenure exhibited a significantly higher prevalence of symptoms and lower spirometric values. Multivariable logistic regression identified exposure to gases as the strongest independent predictor of respiratory symptoms (adjusted OR up to 12.4, p<0.01), followed by exposure to smoke (adjusted OR up to 6.31, p<0.05). Dust exposure showed a non-significant trend, while vapors were not associated with respiratory symptoms.
Conclusion. Professional drivers are at increased risk of developing respiratory symptoms and lung function impairment compared to the control group. Occupational exposure to gases and smoke represents the main independent risk factor, while longer work tenure suggests a cumulative adverse effect.
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