EPIDEMIOLOGICAL ASSESSMENT OF SILICOSIS IN STONE CUTTING WORKERS

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MOHEBI I.; REZAEI M.KH.

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Journal: IRAN OCCUPATIONAL HEALTH JOURNAL Year:2007 | Volume:3 | Issue:3-4 Page(s): 57-60

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Title

EPIDEMIOLOGICAL ASSESSMENT OF SILICOSIS IN STONE CUTTING WORKERS

Author(s)

MOHEBI I. | REZAEI M.KH. | Issue Writer Certificate

Keywords

PNEUMOCONIOSISQ4

SILICAQ4

PNEUMOTHORAXQ4

ADULT RESPIRATORY DISTRESS SYNDROMEQ4

INTERNATIONAL LABOR ORGANIZATIONQ4

Abstract

Background and Aims: The most common identifiable causes for ILD are related to occupational and environmental exposures, especially to inorganic dusts and SILICA dust in one of the most important occupational respiratory toxins that causes silicosis. Silicosis can occur in chronic, accelerated and acute forms. Occupational exposure to crystalline SILICA dust in many industrial operations world wide. The reduction of SILICA dust exposure level in most developed countries during the last century resulted in dramatic decreases in morbidity and mortality from silicosis and SILICA dust associated tuberculosis but exposure risks can be much greater in underdeveloped countries. Silicosis is disabling, non eversible and sometimes fatal. We believe same of this reports is very rare in the world wide and demonstrate the first fatal outbreak report of advanced silicosis in Iran. Method: All of 17 workers had been exposed to crystalline SILICA at the workplaces of SILICA powder production for the periods of 1 to 5 years (the average of exposure was 2.7 years) and because dyspnea and occupational history of SILICA dust exposure referred or self admitted at Urmia occupational medicine centre. All patients reported no SILICA exposure before working at the current sites. Compliant symptoms and physical examination findings recorded for each patient. Spirometery. Flow/volume and body plethysmography performed (with a ZAN.300). chest X-ray films were taken for catch person and in those, who had previous chest X radiography films, progression was assessed by pair comparison of the initial and latest chest X-ray film according to ILO classification of PNEUMOCONIOSIS.Results: All of 17 patients had previously worked in the SILICA powder production workplaces. The total of patient was male whose youngest age was 20 and oldest 79 years. 16 (94%) cases were symptomatic and 1 (6%) had any complaint but occupational history and radiographic findings suggest sub clinical accelerated silicosis. most common findings during clinical course weredry cough 15(88%) productive cough 5 (29 %) ,anorexia 11 (65%), weight loss 11 (65%) orthopnea 10 (58%), respiratory distress 9 (53%), dysphagia 5 (30%), fibromyalgia 6(35%), small joints arthragia 1 (6%), rude crackle 14(82%), decreased of pulmonary expansibility 15 (88%), symmetric PIP arthritis 1 (6%), symmetric wrist joints arthritis 1 (6%), and anemia 1 (6%), 11(65%) patients had FVC lower than 50% of predictive measured. 17 (100%) cases had small opacity. Large opacity were find in 14 (82%) , pleural thickening 12 (71%). 9 (52%) patient during last 5 years died due to ARDS.Conclusion: The findings in this outbreak shows that from 17 patient ,15 (88%) subjects were young adults below 40 years old and dying 9 (53%) persons after 1 to 5 years exposure incision to SILICA dust suggests overexposure had occurred and led the development of advanced silicosis. This outbreak illustrates the very rare manifestations of chest imaging of severe silicosis in the world wide.

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APA: Copy

MOHEBI, I., & REZAEI, M.KH.. (2007). EPIDEMIOLOGICAL ASSESSMENT OF SILICOSIS IN STONE CUTTING WORKERS. IRAN OCCUPATIONAL HEALTH JOURNAL, 3(3-4), 57-60. SID. https://sid.ir/paper/128979/en

Vancouver: Copy

MOHEBI I., REZAEI M.KH.. EPIDEMIOLOGICAL ASSESSMENT OF SILICOSIS IN STONE CUTTING WORKERS. IRAN OCCUPATIONAL HEALTH JOURNAL[Internet]. 2007;3(3-4):57-60. Available from: https://sid.ir/paper/128979/en

IEEE: Copy

I. MOHEBI, and M.KH. REZAEI, “EPIDEMIOLOGICAL ASSESSMENT OF SILICOSIS IN STONE CUTTING WORKERS,” IRAN OCCUPATIONAL HEALTH JOURNAL, vol. 3, no. 3-4, pp. 57–60, 2007, [Online]. Available: https://sid.ir/paper/128979/en

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