mppcf = 900 conclusion: Higher fibre/mL exposures have, led to excesses, increasing with degree of exposure, of mortality from all causes, but such exposures, of at least 300 mpcf.y. Albin et al RMA ID: Retention 165 Lung tissue Concentration of Duration of Mortality study reporting (1994) 034864 patterns of analysis (69 Swedish exposure: M=1.7 employment: M=18 asbestos exposure asbestos fibres asbestos-cement chrysotile, (median=1.2, (median=15) years producing pulmonary in lung tissue workers and 96 tremolite, and range=00-7-3) fibrosis. Chrysotile among asbestos controls) crocidolite fibre/mL. For relatively rapid removal in cement workers workers lungs, whereas 2=pulmonary fibrosis performing milling, amphiboles (tremolite and deaths mixing, sawing, crocidolite) displayed a and polishing slower removal patterns. operations, or Author’s conclusion: sweeping Chrysotile retention may asbestos barn be dependent on dose M=>2 fibre/mL rate, chrysotile and crocidolite retention may be increased by smoking, and chrysotile and tremolite retention may be enhanced by the presence of lung fibrosis. Amandus et al Antao et al Study reporting asbestos (1987) exposure producing respiratory disease. Non-malignant respiratory disease (n=20): SMR=2.43 (95% CI: 1.48, 3.75; p<0.05).
mppcf = 900 fibre/mL conclusion: Higher exposures have, led to excesses, increasing with degree of exposure, of mortality from all causes, but such exposures, of at least 300 mpcf.y. Albin et al (1994) RMA ID: 034864 Retention patterns of asbestos fibres in lung tissue among asbestos cement workers 165 Lung tissue analysis (69 Swedish asbestos-cement workers and 96 controls) 2=pulmonary fibrosis deaths chrysotile, tremolite, and crocidolite Concentration of exposure: M=1.7 (median=1.2, range=00-7-3) fibre/mL. For workers performing milling, mixing, sawing, and polishing operations, or sweeping asbestos barn M=>2 fibre/mL Duration of employment: M=18 (median=15) years Mortality study reporting asbestos exposure producing pulmonary fibrosis. Chrysotile relatively rapid removal in lungs, whereas amphiboles (tremolite and crocidolite) displayed a slower removal patterns. Author’s conclusion: Chrysotile retention may be dependent on dose rate, chrysotile and crocidolite retention may be increased by smoking, and chrysotile and tremolite retention may be enhanced by the presence of lung fibrosis. Amandus et al (1987) Antao et al Study reporting asbestos exposure producing respiratory disease. Non-malignant respiratory disease (n=20): SMR=2.43 (95% CI: 1.48, 3.75; p<0.05).
asb_reasons10.12.2015.docx