Abstract:
Objectives To evaluate the exposure of air pollutants, PM2.5, PM10, NO2, SO2 and O3, in heavy polluted areas of Jinan on the outpatients visit for cardiovascular diseases.
Methods The information on daily cardiovascular outpatients visit in a general hospital, the concentration of air pollutants and meteorological information in a heavy polluted area of Jinan during 2014 to 2016 were collected and analyzed by descriptive analysis. A generalized linear model was used to quantitatively assess the correlation between the concentration of daily air pollutants, PM2.5, PM10, NO2, SO2 and O3, and the outpatient visits for cardiovascular diseases.
Results The total number of outpatient with cardiovascular diseases in the general hospital was 55 858 in 2014-2016 with an average attendance of 51 patients per day. The average concentration of PM2.5, PM10, NO2, SO2 and O3 were 100, 205, 53, 58 and 90 μg/m3, respectively. With an increase of PM2.5, PM10 and NO2 by 10 μg/m3 per day, the visit of outpatients with cardiovascular diseases was increased by 0.40% (95%CI:0.01%~0.80%), 0.25% (95%CI:0.03%~0.47%) and 1.66% (95%CI:0.64%~2.68%), respectively. When the NO2 concentration was increased by 10 μg/m3, there was only a cumulative lag effect of increasing cardiovascular outpatient visits by 2.13% (95%CI:0.81%~3.46%) on Lag02. No significant different effect was observed between SO2 and O3 with the increase of outpatient visits for cardiovascular diseases.
Conclusions There was a significant correlation between air pollutants, PM2.5, PM10 and NO2, with outpatients visit for cardiovascular diseases, and no significant different effect was observed on the concentration of SO2 and O3 with outpatient visits for cardiovascular diseases.