fa عمومى General مقاله اصیل Original Article <p dir="ltr">Background: Epidemiological studies have illustrated that exposure to atmospheric nitrogen oxides (NO2/NOX) is responsible for an increased risk of acute or chronic diseases such as cancer. In this study the health risks associated with nitrogen dioxide (NO2) were assessed in the city of Kermanshah, the capital of Kermanshah province, Iran.<br> Methods: Data on hourly NO2 levels that had been measured with the Environ tech model M200 was taken from the Kermanshah Environmental Protection Agency (KEPA). The AirQ2.2.3 model was used to quantify data based on baseline incidence (BI), relative risk (RR), and attributable proportion (AP). The number of cases of cardiovascular mortality (CM), acute myocardial infarction (MI), and hospital admissions for chronic obstructive pulmonary diseases (HACOPD) was estimated.<br> Results: The results of the current study show that there were 33, 16, and 13 cases of CM, acute MI, and HACOPD, respectively, attributable to NO2 exposure. Furthermore, 26.85% of health impacts occurred on days when NO2 levels did not exceed 40 &mu;g/m3. For every 10 &mu;g/m3 increase in the NO2 level, the risk of CM, MI, and HACOPD rose about 0.2%, 0.36%, and 0.38%, respectively.<br> Conclusion: In order to reduce the number of cases of mortality and morbidity caused by exposure to NO2, several immediate steps should be taken by the government to control emissions from various sources, particularly car exhaust, to reduce the levels of NO2 in the atmosphere.</p> Health impact, Myocardial infarction, COPD, NO2, Kermanshah 91 97 http://ehemj.com/browse.php?a_code=A-10-1-55&slc_lang=fa&sid=1 Yusef Omidi yusef_omidi@yahoo.com 10031947532846002455 10031947532846002455 No Department of Environmental Health Engineering, School of Health, Lorestan University of Medical Sciences, Khorramabad, Iran Gholamreza Goudarzi ghgoodarzi@agums.ac.ir 10031947532846002456 10031947532846002456 No Environmental Technologies Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran Ali Mirza Heidari a.heidari@gmail.com 10031947532846002457 10031947532846002457 No Department of Environmental Health Engineering, School of Public Health, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran Seyed Mohammad Daryanoosh mohammad_daryanoosh@yahoo.com 10031947532846002458 10031947532846002458 Yes Department of Environmental Health Engineering, School of Health, Lorestan University of Medical Sciences, Khorramabad, Iran