JaLCDOI 10.18926/AMO/31694
FullText URL fulltext.pdf
Author Takigawa, Tomoko| Kishimoto, Takumi| Nabe, Makoto| Nishide, Tadashi| Wang, Da-Hong| Seki, Akihiko| Uchida, Genkei| Kira, Shohei|
Abstract <p>This study involved the examination of 1,006 chest x-ray films of workers from the industries devoted to shipyard welding, stone grinding, and refractory crushing in southern Okayama prefecture. Of the reviewed films, analysis was focused on subjects with a profusion rate of 0/1 as well as pneumoconiotic subjects (exhibiting profusion rates of 1/0 or greater) in order to discover cases in the beginning stages. One-hundred-and-seventy-four films illustrated a profusion rate of 0/1 or greater, and the proportion of this profusion rate was revealed to be highest in shipyard welders. Even some workers under 40 years of age were found to have already developed pneumoconiosis. Of these 1,006 subjects, 30 volunteers permitted us to measure their personal dust exposure concentrations. The measured concentration of the shipyard welders' dust exposure (respirable dust; 3.3 86.3 mg/m3, total dust; 7.5-117.0 mg/m3) was higher than those of the other 2 industries. Statistical differences among the industries were observed in the respirable dust concentrations. A statistically significant positive correlation was demonstrated between the working duration in dusty environments and the rate of profusion. The present findings suggest the need for taking adequate measures in Okayama in order to prevent workers from developing, or to help retard the progression of, pneumoconiosis.</p>
Keywords pneumoconiosis profusion dust exposure shipyard welder Japan
Amo Type Article
Published Date 2002-12
Publication Title Acta Medica Okayama
Volume volume56
Issue issue6
Publisher Okayama University Medical School
Start Page 303
End Page 308
ISSN 0386-300X
NCID AA00508441
Content Type Journal Article
language 英語
File Version publisher
Refereed True
PubMed ID 12685859
Web of Science KeyUT 000179959000005