air pollution and incidence of acute coronary events

Research studies on wood smoke and other air pollution.

air pollution and incidence of acute coronary events

Postby Wilberforce » Sat Jan 25, 2014 6:48 pm

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Long term exposure to ambient air pollution and incidence of acute coronary events: prospective cohort study and meta-analysis in 11 European cohorts from the ESCAPE Project
Cesaroni et al
http://www.bmj.com/content/348/bmj.f7412.full.pdf+html
Abstract

Objectives To study the effect of long term exposure to airborne pollutants on the incidence of acute coronary events in 11 cohorts participating in the European Study of Cohorts for Air Pollution Effects (ESCAPE).

Design Prospective cohort studies and meta-analysis of the results.

Setting Cohorts in Finland, Sweden, Denmark, Germany, and Italy.

Participants 100 166 people were enrolled from 1997 to 2007 and followed for an average of 11.5 years. Participants were free from previous coronary events at baseline.

Main outcome measures Modelled concentrations of particulate matter <2.5 µm (PM2.5), 2.5-10 µm (PMcoarse), and <10 µm (PM10) in aerodynamic diameter, soot (PM2.5 absorbance), nitrogen oxides, and traffic exposure at the home address based on measurements of air pollution conducted in 2008-12. Cohort specific hazard ratios for incidence of acute coronary events (myocardial infarction and unstable angina) per fixed increments of the pollutants with adjustment for sociodemographic and lifestyle risk factors, and pooled random effects meta-analytic hazard ratios.

Results 5157 participants experienced incident events. A 5 µg/m3 increase in estimated annual mean PM2.5 was associated with a 13% increased risk of coronary events (hazard ratio 1.13, 95% confidence interval 0.98 to 1.30), and a 10 µg/m3 increase in estimated annual mean PM10 was associated with a 12% increased risk of coronary events (1.12, 1.01 to 1.25) with no evidence of heterogeneity between cohorts. Positive associations were detected below the current annual European limit value of 25 µg/m3 for PM2.5 (1.18, 1.01 to 1.39, for 5 µg/m3 increase in PM2.5) and below 40 µg/m3 for PM10 (1.12, 1.00 to 1.27, for 10 µg/m3 increase in PM10). Positive but non-significant associations were found with other pollutants.

Conclusions Long term exposure to particulate matter is associated with incidence of coronary events, and this association persists at levels of exposure below the current European limit values.
• The Surgeon General has determined that there is no safe level of exposure to ambient smoke!

• If you smell even a subtle odor of smoke, you are being exposed to poisonous and carcinogenic chemical compounds!

• Even a brief exposure to smoke raises blood pressure, (no matter what your state of health) and can cause blood clotting, stroke, or heart attack in vulnerable people. Even children experience elevated blood pressure when exposed to smoke!

• Since smoke drastically weakens the lungs' immune system, avoiding smoke is one of the best ways to prevent colds, flu, bronchitis, or risk of an even more serious respiratory illness, such as pneumonia or tuberculosis! Does your child have the flu? Chances are they have been exposed to ambient smoke!
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