Ventilatory function in Nigerian coal miners.

Jain, BhawnaBhutoria; Patrick, J. M.

doi:10.1136/oem.38.3.275

Cited by 5 publications

(4 citation statements)

References 12 publications

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“…Also Jain B.L. (1981) [12] reported that coalface work is associated with 8% impairment of maximum expiratory airflow, probably due to dust exposure.…”

Section: Discussionmentioning

confidence: 99%

A Comparative Study of Morbid Conditions Amongst Opencast and Underground Coal Miners

Bhelkar¹,

Ughade²,

Thakre³

et al. 2015

jemds

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OBJECTIVE:To study prevalence and pattern of morbid conditions and to compare these amongst opencast and underground coal miners. METHODS: A cross sectional study was carried out at one of the coal mines having both opencast and underground mines in central India. By systemic stratified random sampling, 204 study subjects each from opencast and underground mines were selected. RESULTS: Prevalence of morbid conditions was found significantly (p < 0.05) more in underground miners (65.7%) as compared to opencast miners (54.4%). A significant linear trend was observed between length of service and prevalent morbid conditions in both the groups (p<0.001). Prevalence of morbidities was significantly (p<0.001) more in underground miners as compared to opencast miners, especially chronic respiratory morbid conditions (21.6% versus 7.8%) and musculoskeletal conditions (28.9% versus 12.2%). Mean values of forced vital capacity and forced expiratory volume of underground miners were significantly (p<0.001) lower than in opencast miners (FVC 2.80 0.55 liters versus 2.98 0.53 liters; FEV 2.9 0.21 liters versus 3.01 0.36 liters). Multivariate analysis revealed significant role of miner's age, place of work, past history of underground mining exposure, length of service and smoking habit in reduction of FVC and FEV. CONCLUSION: Underground miners carry more risk of developing morbidities. Chronic respiratory diseases, musculoskeletal problems, skin diseases and backache are more prevalent in underground miners than in opencast miners. Miner's age, place of work, past history of underground mining exposure, length of service and smoking habit significantly affect FVC and FEV.

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“…Also Jain B.L. (1981) [12] reported that coalface work is associated with 8% impairment of maximum expiratory airflow, probably due to dust exposure.…”

Section: Discussionmentioning

confidence: 99%

A Comparative Study of Morbid Conditions Amongst Opencast and Underground Coal Miners

Bhelkar¹,

Ughade²,

Thakre³

et al. 2015

jemds

View full text Add to dashboard Cite

show abstract

“…Although this result may have been influenced by survivor sample bias, it suggests that in that coal field, accelerated rates of decline may be uncommon. Jain and Patrick [1981] reported an average rate of FEVl decline of -34 ml/yr in 675 Nigerian underground miners.…”

Section: Discussionmentioning

confidence: 99%

A longitudinal study of pulmonary function in coal miners in Lorraine, France

Bates

Pham

Chau

et al. 1985

American J Industrial Med

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A longitudinal study of pulmonary function and radiological change has been conducted on 141 nonsmoking coal miners and 256 smoking coal miners from Lorraine, France. At the time of the first examination occasioned by radiological change or shortness of breath, the men averaged between 46.6 years and 50.9 years of age, and they retired approximately 8 years after entering the study. They have been followed for average periods of about 18 years and a mean of five FEV1 observations per man were made over that period. Changes in radiological category have been documented. Average rates of decline of FVC and FEV1 were similar, and varied between -47 ml/yr in nonsmoking miners still alive, to -78 ml/yr in deceased smoking miners. These accelerated rates were similar before and after retirement from the mine.

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“…Very few studies on the association between coal mining and lung function have been carried out in developing countries in Africa. A study from Nigeria showed that FEV 1 did not vary among occupational groups in the colliery (Jain and Patrick 1981).…”

Section: Introductionmentioning

confidence: 98%