Effects of Occupational Dust Exposure on the Respiratory Health of Portland Cement Workers

Yang, Chun‐Yuh; Huang, Chieh-Chen; Hf, Chiu; Jf, Chiu; Sj, Lan; Yc, Ko

doi:10.1080/009841096160637

Cited by 67 publications

(6 citation statements)

References 6 publications

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“…Considering short duration of work for exposed groups, the lower FVC value is still clinically important as change in pulmonary parameters are the product of multiple years of exposure. There is a statistically significant reduction in FEV1 consistent with studies done by Jenny et al (1960) and Yang et al (1996) among workers exposed to cement and construction dust which was indicative of altered airway patency.…”

Section: Discussionsupporting

confidence: 89%

Exposure to occupational dust and changes in pulmonary function among cobblestone paving workers of Jimma, Ethiopia

Hassen¹,

Ibrahim²

2014

Rev. ambiente água

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The classic diseases of "dusty" occupations may be on decline, but they are not yet extinct. Studies have found associations between changes in ambient particulate air pollution and increased cardiorespiratory morbidity and mortality. A cross-sectional comparative study design was employed on 127 male nonsmoker cobblestone paving workers and 194 matched employed office workers as a reference in order to assess changes in pulmonary function related to dust exposure among cobblestone road paving workers of Jimma zone, Ethiopia. Data was collected using structured questionnaires and spirometric measurements after ethical clearance was obtained. Data was analyzed using unpaired t-tests to examine the differences between the groups. P-values equal or less than 0.05 were considered statistically significant; odds were calculated at a 95% confidence interval. Cobblestone road paving workers had significantly higher odds of respiratory symptoms, dry cough (p < 0.05), cough (p < 0.01) and sore throat (p< 0.001) compared to the reference. The FEV1 for workers exposed to cobblestone road paving workers ranged between 3.12-4.73 L, with a mean of 3.96 ± 0.6 L, significantly lower than the reference groups who had a range of 3.3-4.78 L and a mean of 4.01 ± 0.6 L (p < 0.05). The mean value of the ratio of FEV1/FVC was significantly decreased in the cobblestone road paving workers compared to the controls (87.2 (SD 4.3) v 89.5 (SD 5.4), p = 0.01). In conclusion, the study revealed clear evidence of the need for health education and for the promotion of activities directed towards mitigating respiratory hazards in order to foster a safe and healthy work environment.

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Section: Discussionsupporting

confidence: 89%

Exposure to occupational dust and changes in pulmonary function among cobblestone paving workers of Jimma, Ethiopia

Hassen¹,

Ibrahim²

2014

Rev. ambiente água

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“…Noor [2] also found increased prevalence of chronic respiratory symptoms among cement workers exposed to increased levels of dust. Our findings also confirm results from other previous cross-sectional studies reporting a higher prevalence of respiratory symptoms among exposed cement workers when compared with controls [1,4,5]. Comparing symptom prevalence between studies is difficult because there are several methodological differences.…”

Section: Discussionsupporting

confidence: 89%

Lung function reduction and chronic respiratory symptoms among workers in the cement industry: a follow up study

2011

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BackgroundThere are only a few follow-up studies of respiratory function among cement workers. The main aims of this study were to measure total dust exposure, to examine chronic respiratory symptoms and changes in lung function among cement factory workers and controls that were followed for one year.MethodsThe study was conducted in two cement factories in Ethiopia. Totally, 262 personal measurements of total dust among 105 randomly selected workers were performed. Samples of total dust were collected on 37-mm cellulose acetate filters placed in closed faced Millipore-cassettes. Totally 127 workers; 56 cleaners, 44 cement production workers and 27 controls were randomly selected from two factories and examined for lung function and interviewed for chronic respiratory symptoms in 2009. Of these, 91 workers; 38 cement cleaners (mean age 32 years), 33 cement production workers (36 years) and 20 controls (38 years) were examined with the same measurements in 2010.ResultsTotal geometric mean dust exposure among cleaners was 432 mg/m3. The fraction of samples exceeding the Threshold Limit Value (TLV) of 10 mg/m3 for the cleaners varied from 84-97% in the four departments. The levels were considerably lower among the production workers (GM = 8.2 mg/m3), but still 48% exceeded 10 mg/m3.The prevalence of all the chronic respiratory symptoms among both cleaners and production workers was significantly higher than among the controls.Forced Expiratory Volume in one second (FEV1) and FEV1/Forced Vital Capacity (FEV1/FVC) were significantly reduced from 2009 to 2010 among the cleaners (p < 0.002 and p < 0.004, respectively) and production workers (p < 0.05 and p < 0.02, respectively), but not among the controls.ConclusionsThe high prevalence of chronic respiratory symptoms and reduction in lung function is probably associated with high cement dust exposure. Preventive measures are needed to reduce the dust exposure.

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“…These findings are similar to other reports [7,11,16], and in contrast with some others [11,21]. Mwaiselage et al found such association in a cross-sectional study among 120 exposed and 107 unexposed workers at a Tanzanian cement factory [8].…”

Section: Discussionsupporting

confidence: 67%

A study on respiratory problems and pulmonary function indexes among cement industry workers in Mashhad, Iran

Rafeemanesh¹,

Alizadeh²,

Saleh³

et al. 2015

Med Pr

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Background: The respiratory system is the most vulnerable system in the cement industry. This study was conducted to determine the effects of occupational exposure to cement dust on the respiratory system more thoroughly. Material and Methods: In this cross sectional study an interviewer-administered questionnaire on socio-demographic characteristics and respiratory symptoms was completed and pulmonary function tests were carried out on 100 exposed and 120 non-exposed workers at the cement factory in Mashhad, Iran. The data was statistically analyzed by SPSS 16. Results: The mean of age and work duration in the exposed group was 37.5±6.3 and 10.7±5.4 years compared with the non-exposed group that was 36.1±7.1 and 10.1±5.7 years, respectively. Levels of exposure to inhalable cement dust in the exposed group were 23.13 mg/m 3 (higher than national occupational exposure limits for such particles). Among the exposed group, respiratory symptoms as cough (6% vs. 0.8% of the non-exposed) and sputum (7% vs. 0.8% of the nonexposed) were significantly more prevalent (p < 0.05). Forced expiratory flow 25-75% (FEF 25-75% ) was significantly lower in the exposed workers compared with non-exposed ones (p < 0.05). Also forced expiratory volume in 1 s / forced vital capacity (FEV 1 /FVC) and FEF 25-75% had a reverse correlation with the length of employment (p = 0.000 and p = 0.003, respectively). Conclusions: The findings of this study showed that occupational exposure to cement dust could be a significant factor of respiratory system dysfunction. Strict implementation of a respiratory protection program is recommended in cement industries. Med Pr 2015;66(4):471-477

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Effects of Occupational Dust Exposure on the Respiratory Health of Portland Cement Workers

Cited by 67 publications

References 6 publications

Exposure to occupational dust and changes in pulmonary function among cobblestone paving workers of Jimma, Ethiopia

Exposure to occupational dust and changes in pulmonary function among cobblestone paving workers of Jimma, Ethiopia

Lung function reduction and chronic respiratory symptoms among workers in the cement industry: a follow up study

A study on respiratory problems and pulmonary function indexes among cement industry workers in Mashhad, Iran

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