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Artigo Produção Nacional Revisado por pares
BIBTEX RIS

Cardiac arrhythmia emergency room visits and environmental air pollution in Sao Paulo, Brazil

2008; BMJ; Volume: 62; Issue: 3 Linguagem: Inglês

10.1136/jech.2006.058123

ISSN

1470-2738

Autores

Ubiratan de Paula Santos, Mário Terra Filho, Chi-Kwong Lin, Luiz Alberto Amador Pereira, Thaís Cidália Vieira, Paulo Hilário Nascimento Saldiva, Alfésio Luı́s Ferreira Braga,

Tópico(s)

Global Health Care Issues

Resumo

Air-pollution exposure has been associated with increased cardiovascular hospital admissions and mortality in time-series studies. We evaluated the relation between air pollutants and emergency room (ER) visits because of cardiac arrhythmia in a cardiology hospital.In a time-series study, we evaluated the association between the emergency room visits as a result of cardiac arrhythmia and daily variations in SO(2), CO, NO(2), O(3) and PM(10), from January 1998 to August 1999. The cases of arrhythmia were modelled using generalised linear Poisson regression models, controlling for seasonality (short-term and long-term trend), and weather.Interquartile range increases in CO (1.5 ppm), NO(2) (49,5 microg/m(3)) and PM(10) (22.2 microg/m(3)) on the concurrent day were associated with increases of 12.3% (95% CI: 7.6% to 17.2%), 10.4% (95% CI: 5.2% to 15.9%) and 6.7% (95% CI: 1.2% to 12.4%) in arrhythmia ER visits, respectively. PM(10), CO and NO(2) effects were dose-dependent and gaseous pollutants had thresholds. Only CO effect resisted estimates in models with more than one pollutant.Our results showed that air pollutant effects on arrhythmia are predominantly acute starting at concentrations below air quality standards, and the association with CO and NO(2) suggests a relevant role for pollution caused by cars.

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