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Dynamics of pre-shift and post-shift lung function parameters among wood workers in Ghana

  • John Ekman (School of Medical Sciences, Faculty of Medicine and Health, Orebro University) ;
  • Philip Quartey (Department of Biomedical Sciences, School of Allied Health Sciences, College of Health and Allied Sciences, University of Cape Coast) ;
  • Abdala Mumuni Ussif (Department of Forensic Sciences, School of Biological Sciences, College of Agriculture and Natural Sciences, University of Cape Coast) ;
  • Niklas Ricklund (Department of Occupational and Environmental Health, Faculty of Business, Science and Engineering, Orebro University) ;
  • Daniel Lawer Egbenya (Department of Physiology, School of Medical Sciences, College of Health and Allied Sciences, University of Cape Coast) ;
  • Gideon Akuamoah Wiafe (Department of Physiology, School of Medical Sciences, College of Health and Allied Sciences, University of Cape Coast) ;
  • Korantema Mawuena Tsegah (Department of Biomedical Sciences, School of Allied Health Sciences, College of Health and Allied Sciences, University of Cape Coast) ;
  • Akua Karikari (Department of Biomedical Sciences, School of Allied Health Sciences, College of Health and Allied Sciences, University of Cape Coast) ;
  • Hakan Lofstedt (Department of Occupational and Environmental Medicine, Faculty of Medicine and Health, Orebro University) ;
  • Francis Tanam Djankpa (Department of Physiology, School of Medical Sciences, College of Health and Allied Sciences, University of Cape Coast)
  • Received : 2022.05.09
  • Accepted : 2023.08.14
  • Published : 2023.12.31

Abstract

Background: Diseases affecting the lungs and airways contribute significantly to the global burden of disease. The problem in low- and middle-income countries appears to be exacerbated by a shift in global manufacturing base to these countries and inadequate enforcement of environmental and safety standards. In Ghana, the potential adverse effects on respiratory function associated with occupational wood dust exposure have not been thoroughly investigated. Methods: Sixty-four male sawmill workers and 64 non-woodworkers participated in this study. The concentration of wood dust exposure, prevalence and likelihood of association of respiratory symptoms with wood dust exposure and changes in pulmonary function test (PFT) parameters in association with wood dust exposure were determined from dust concentration measurements, symptoms questionnaire and lung function test parameters. Results: Sawmill workers were exposed to inhalable dust concentration of 3.09 ± 0.04 mg/m3 but did not use respirators and engaged in personal grooming habits that are known to increase dust inhalation. The sawmill operators also showed higher prevalence and likelihoods of association with respiratory symptoms, a significant cross-shift decline in some PFT parameters and a shift towards a restrictive pattern of lung dysfunction by end of daily shift. The before-shift PFT parameters of woodworkers were comparable to those of non-woodworkers, indicating a lack of chronic effects of wood dust exposure. Conclusions: Wood dust exposure at the study site was associated with acute respiratory symptoms and acute changes in some PFT parameters. This calls for institution and enforcement of workplace and environmental safety policies to minimise exposure at sawmill operating sites, and ultimately, decrease the burden of respiratory diseases.

Keywords

Acknowledgement

We wish to show gratitude to the executive members, owners and wood workers at Abura, Esuekyir, Kakumdo sawmill companies and control persons at University of Cape Coast for participating in the project. We also thank Statistician Ing-Liss Bryngelsson for excellent help with the data processing.

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