Effects of Particulate Matter and Its Chemical Constituents on Elderly Hospital Admissions Due to Circulatory and Respiratory Diseases.

Autor:	Ferreira TM; Pos-Graduate Program in Environmental Science, University of São Paulo, São Paulo SP 05508-010, Brazil. tmoraisf@gmail.com., Forti MC; Center of Earth System Science, National Institute for Space Research, São José dos Campos SP 12227-010, Brazil. cristina.forti@inpe.br., de Freitas CU; Department of Preventive Medicine, School of Medicine, University of São Paulo, São Paulo SP 01246-903, Brazil. umbelino.freitas@gmail.com., Nascimento FP; Department of Preventive Medicine, School of Medicine, University of São Paulo, São Paulo SP 01246-903, Brazil. fepnascimento@gmail.com., Junger WL; Department of Epidemiology, Institute of Social Medicine, State University of Rio de Janeiro, Rio de Janeiro RJ 20550-900, Brazil. wjunger@ims.uerj.br., Gouveia N; Department of Preventive Medicine, School of Medicine, University of São Paulo, São Paulo SP 01246-903, Brazil. ngouveia@usp.br.
Jazyk:	angličtina
Zdroj:	International journal of environmental research and public health [Int J Environ Res Public Health] 2016 Sep 23; Vol. 13 (10). Date of Electronic Publication: 2016 Sep 23.
DOI:	10.3390/ijerph13100947
Abstrakt:	Various fractions of particulate matter have been associated with increased mortality and morbidity. The purpose of our study is to analyze the associations between concentrations of PM2.5, PM2.5-10, PM10 and their chemical constituents (soluble ions) with hospital admissions due to circulatory and respiratory diseases among the elderly in a medium-sized city in Brazil. A time series study was conducted using Poisson regression with generalized additive models adjusted for confounders. Statistically significant associations were identified between PM10 and PM2.5-10 and respiratory diseases. Risks of hospitalization increased by 23.5% (95% CI: 13.5; 34.3) and 12.8% (95% CI: 6.0; 20.0) per 10 μg/m³ of PM2.5-10 and PM10, respectively. PM2.5 exhibited a significant association with circulatory system diseases, with the risk of hospitalization increasing by 19.6% (95% CI: 6.4; 34.6) per 10 μg/m³. Regarding the chemical species; SO₄(2-), NO₃(-), NH₄⁺ and K⁺ exhibited specific patterns of risk, relative to the investigated outcomes. Overall, SO₄(2-) in PM2.5-10 and K⁺ in PM2.5 were associated with increased risk of hospital admissions due to both types of diseases. The results agree with evidence indicating that the risks for different health outcomes vary in relation to the fractions and chemical composition of PM10. Thus, PM10 speciation studies may contribute to the establishment of more selective pollution control policies. Competing Interests: The authors declare no conflict of interest.
Databáze:	MEDLINE
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