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Sweeper’s lung disease: a cross-sectional study of an overlooked illness among sweepers of Pakistan

Authors Anwar SK, Mehmood N, Nasim N, Khurshid M, Khurshid B

Received 19 November 2012

Accepted for publication 11 January 2013

Published 17 April 2013 Volume 2013:8 Pages 193—197


Checked for plagiarism Yes

Review by Single-blind

Peer reviewer comments 6

Video abstract presented by Shaikh Khurshid Anwar

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Shaikh Khurshid Anwar, Naeem Mehmood, Nasir Nasim, Maryam Khurshid, Bilal Khurshid

Department of Pulmonary Medicine, Pakistan Institute of Medical Sciences (PIMS), Islamabad, Pakistan

Background: Sweepers are prone to develop chronic obstructive pulmonary disease even without tobacco smoking.
Purpose: To investigate roadside dust as a cause of air flow obstruction among sweepers, and the role of spirometry in its preclinical diagnosis.
Material and methods: One-hundred nonsmoking sweepers (aged 30–60 years) of both sexes sweeping on roads for 8–12 hours a day for the Capital Development Authority of Islamabad, Pakistan were used as study participants (Group A). One-hundred healthy nonsmokers (aged 30–60 years) in the same socioeconomic group and living in the same environment represented the nonsweeper group (Group B). After proper clinical evaluation and chest X-rays, spirometric evaluation was carried out in both groups. Comparisons were drawn between various spirometric parameters.
Results: Pulmonary function tests showed that the mean forced vital capacity was 78 ± 1.40 in the sweeper group (Group A) and 83 ± 0.86 in the nonsweeper group (Group B). Mean forced expiratory volume in 1 second was 66 ± 1.67 in Group A and 85 ± 0.85 in Group B (P < 0.05), a difference of 19%. The forced midexpiratory flow was 41% lower in Group A than in Group B (P < 0.0001). The pattern of pulmonary function obstruction was shown to be proportional to the duration of exposure to dust caused by sweeping.
Conclusion: Occupational exposure to dust leads to an obstructive pattern among sweepers. Spirometry is the simplest, noninvasive technique to detect preclinical disease.

Keywords: COPD, sweepers, dust, spirometry

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