Demeke, Dessalegn (2017) Assessment of Respiratory Symptoms and Pulmonary Functions among Workers of Flour Mills in Addis Ababa, Ethiopia, 2016/2017. Masters thesis, Addis Ababa University.
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Abstract
Back ground: The occupational hazards such as dust and unfavorable microclimatic conditions influence human health. The occupation related lung diseases are most likely due to the deposition of dust in the lungs, which is influenced by the types of dusts, the period of exposure, the concentration and size of airborne dust in the breathing zone. Objective: To assess pulmonary function status in workers of flour mill in Addis Ababa, Ethiopia. Methods: The study design was comparative cross sectional and the sampling technique was convenient sampling. A total of 54 flour mill workers who work for more than eight hours shift per day and 54 control subjects matched for sex, age, weight, height and area of residence were enrolled. Anthropometric measurements was done. Respiratory symptoms were evaluated using structured questionnaire (BMRC) guidelines and administered through face-to-face interview. Lung function was measured using a digital portable spirometer (Spiro Pro) based on the ATS guidelines. FVC, FEV1, FEV1 %, PEFR and FEF25-75 %, were measured. Result: The present study showed statistically significant reduction in the mean values of PFTs in flour mill workers as compared to their matched controls. There also exist a dose response relationship between impairment of lung function and duration of exposure. Percentage prevalence of dry cough, productive cough; wheeze and breathlessness for exposed informants were much higher than control groups. Reductions in most PFTs in study subjects were very significant for FVC (4.25±0.93 vs. 5.30±0.71, p<0.001), FEV1 (3.46±0.86 vs. 4.50±0.72, p<0.001), PEFR (5.43±2.43 vs. 7.87±2.53, p<0.001) and FEF25-75% (3.87±1.61 vs. 4.60±1.60, p<0.05), but not significant for FEV1% (81.93±12.74 vs. 83.40±12.50, p>0.05). Conclusion: Based on the results of the present study occupational exposure to flour dust could cause respiratory irritation, sensitization and thereby reduce lung efficiency. In summary, flour mill workers develop 27.7% of restrictive type and 11.1 % of obstructive type of lung disorders.
| Item Type: | Thesis (Masters) |
|---|---|
| Uncontrolled Keywords: | Flour dust, PFTs, Spirometery, Respiratory symptoms |
| Subjects: | Q Science > Q Science (General) Q Science > QP Physiology R Medicine > R Medicine (General) |
| Divisions: | Africana |
| Depositing User: | Vincent Mpoza |
| Date Deposited: | 19 Oct 2018 06:13 |
| Last Modified: | 19 Oct 2018 06:13 |
| URI: | http://thesisbank.jhia.ac.ke/id/eprint/6953 |
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