부산대학교 도서관

Hypertension and air pollution are two important risk factors for cardiovascular morbidity and mortality. Although several studies suggest that air pollution has a significant impact on blood pressure, studies on long-term effects are sparse and still controversial. To evaluate the effects of exposure of outdoor workers to different levels of traffic-generated PM 2.5 on blood pressure. This is an observational panel study. 88 non-smoking workers exposed to different concentrations of air pollution were evaluated weekly along four successive weeks. In each week, personal monitoring of 24-h PM 2.5 concentration and 24-h ambulatory blood pressure were measured. The association between blood pressure variables and PM 2.5 , adjusted for age, body mass index, time in job, daily work hours, diabetes, hypertension and cholesterol was assessed by means of multiple linear regression models fitted by least squares. Exposure to PM 2.5 (ranging from 8.5 to 89.7 μg/m3) is significantly and consistently associated with an increase in average blood pressure. An elevation of 10 μg/m3 in the concentration of PM 2.5 is associated with increments of 3.9 mm Hg (CI 95% = [1.5; 6.3]) in average systolic 24-h blood pressure for hypertensive and/or diabetic workers. Exposure to fine particles, predominantly from vehicular traffic, is associated with elevated blood pressure in hypertensive and/or diabetic workers. • Personal monitoring allows a more precise evaluation of environmental exposure. • Hypertensive and/or diabetic people are more susceptible to fine particles. • Effects of exposure to PM 2.5 were remarkable in both systolic and diastolic pressures. • The regular use of medicines may not prevent the adverse effect of air pollution. [ABSTRACT FROM AUTHOR]