Vol 13: The effect of secondary inorganic aerosols, soot and the geographical origin of air mass on acute myocardial infarction hospitalisations in Gothenburg, Sweden during 1985-2010: a case-crossover study.Reportar como inadecuado



 Vol 13: The effect of secondary inorganic aerosols, soot and the geographical origin of air mass on acute myocardial infarction hospitalisations in Gothenburg, Sweden during 1985-2010: a case-crossover study.


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This article is from Environmental Health, volume 13.AbstractBackground: The relative importance of different sources of air pollution for cardiovascular disease is unclear. The aims were to compare the associations between acute myocardial infarction AMI hospitalisations in Gothenburg, Sweden and 1 the long-range transported LRT particle fraction, 2 the remaining particle fraction, 3 geographical air mass origin, and 4 influence of local dispersion during 1985–2010. Methods: A case-crossover design was applied using lag0 the exposure the same day as hospitalisation, lag1 exposure one day prior hospitalisation and 2-day cumulative average exposure CA2 mean of lag0 and lag1. The LRT fractions included PMion sum of sulphate, nitrate and ammonium and soot measured at a rural site. The difference between urban PM10 particulate matter with an aerodynamic diameter smaller than 10 μm and rural PMion was a proxy for locally generated PM10 PMrest. The daily geographical origin of air mass was estimated as well as days with limited or effective local dispersion. The entire year was considered, as well as warm and cold periods, and different time periods. Results: In total 28 215 AMI hospitalisations occurred during 26 years. PM10, PMion, PMrest and soot did not influence AMI for the entire year. In the cold period, the association was somewhat stronger for PMrest than for urban PM10; the strongest associations were observed during 1990–2000 between AMI and CA2 of PMrest 6.6% per inter-quartile range IQR, 95% confidence interval 2.1 to 11.4% and PM10 4.1%, 95% CI 0.2% − 8.2%. Regarding the geographical air mass origins there were few associations. Days with limited local dispersion showed an association with AMI in the cold period of 2001–2010 6.7%, 95% CI 0.0% − 13.0%. Conclusions: In the cold period, locally generated PM and days with limited local dispersion affected AMI hospitalisations, indicating importance of local emissions from e.g. traffic.



Autor: Wichmann, Janine; Sjoberg, Karin; Tang, Lin; Haeger-Eugensson, Marie; Rosengren, Annika; Andersson, Eva M; Barregard, Lars; Sallsten, Gerd

Fuente: https://archive.org/







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