Pollution is bad for the lungs but it's also bad for the heart, says a recent study of 48 Boston-area patients, all of whom had coronary artery disease. 24-hour Holter monitors were used to examine electrocardiograms for the conductivity change, called an ST-segment depression, which may indicate inadequate blood flow to the heart or inflamed heart muscle. The average 24-hour levels for all pollutants included in the analysis were below accepted or proposed National Air Quality Standard thresholds, meaning patients were breathing air considered healthy. Previous studies have documented that exposure to road traffic can trigger heart attacks, and that particulate air pollution increases the risk for cardiac death or heart attack. Read More...
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