Document Type : Original Article
Department of Environment , Ahvaz Branch, Islamic Azad University, Ahvaz, Iran
Professor of Environmental Health Engineering, Department of Environment, Ahvaz Branch, Islamic Azad University, Ahvaz, Iran
Assistant professor in Environmental Health Engineering, Department of Environment, Ahvaz Branch, Islamic Azad University, Ahvaz, Iran
Background and Objectives: This study aims to investigate the relationship between the rate of cardiovascular and respiratory death and the average concentration of major air quality index "AQI”, including NO2, SO2, CO, O3 and PM10 in Ahvaz in the period of 10 years (2007 -2017).
Subjects and Methods: This analytic study was conducted in Ahvaz, 2019. Data on referrals and the number of hospitalized cardiovascular and respiratory patients and also on air pollutants are obtained through HIS system (Hospital Information System) and air quality monitoring stations in Ahvaz respectively. The data were analyzed by SPSS version 4 and Poisson Distribution Regression Model to evaluate the effects of each pollutant and the rate of hospitalization. In this study, confidence interval and the significance level are considered at 95% and 5% respectively.
Results: Based on the results of Poisson regression analysis, there was a significant relationship between the average concentration of NO2, O3, CO and SO2 and hospitalization of patients with cardiovascular disease,. This was the case with NO2 more than other pollutants. Furthermore, there was a significant relationship between the average concentrations of NO2, CO and O3 and the hospitalization rate of patients. The effect of NO2 was also higher here. Due to the results, NO2, CO, and O3 had a significant direct correlation with cardiovascular and respiratory rates. The effect of NO2 has been higher than other pollutants.
Conclusion: As a result, the consumption of that air pollutants increase the mortality rate of patients by diagnosing cardiovascular and respiratory problems,.