摘要 : Although epidemiological studies have linked particulate air pollution with cardiopulonary mortality, underlying biological mechanisms remain largely unknown. Unexplored pathophysiological pathways include transient declines in bl... 展开 Although epidemiological studies have linked particulate air pollution with cardiopulonary mortality, underlying biological mechanisms remain largely unknown. Unexplored pathophysiological pathways include transient declines in blood oxygenation and/or changes in cardiac rhytm following particulate exposure. In this study, blood oxygen saturation using pulse oximetry (S_po2) and pulse rate were measured daily on a panel of 90 elderly subjects during the winter of 1995-1996 in Utah Valley. 收起