Document Type : Original Article(s)
Authors
- Zeynab Davoodabadi 1
- Azam Soleimani 2
- Ali Pourmoghaddas 3
- Sayed Mohsen Hosseini 4
- Tohid Jafari-Koshki 5
- Mojtaba Rahimi 6
- Mansour Shishehforoush 7
- Ahmadreza Lahijanzadeh 8
- Babak Sadeghian 9
- Elham Moazam 10
- Mohammad Bagher Mohebi 11
- Victoria Ezatian 12
- Katayoun Rabiei 13
- Nizal Sarrafzadegan 13
1 Cardiac Rehabilitation Research Center, Cardiovascular Research Institute, Isfahan University of Medical Sciences, Isfahan, Iran
2 Heart Failure Research Center, Cardiovascular Research Institute, Isfahan University of Medical Sciences, Isfahan, Iran
3 Interventional Cardiology Research Center, Cardiovascular Research Institute, Isfahan University of Medical Sciences, Isfahan, Iran
4 Department of Biostatistics and Epidemiology, School of Public Health, Isfahan University of Medical Sciences, Isfahan, Iran
5 Road Traffic Injury Research Center AND Department of Statistics and Epidemiology, School of Health, Tabriz University of Medical Sciences, Tabriz, Iran
6 Department of Anesthesiology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
7 Isfahan Disaster Management Office, Isfahan Governor’s Office, Isfahan, Iran
8 Khouzestan Department of Environment, Ahvaz, Iran
9 Central Laboratory and Air Pollution Monitoring, Isfahan Province Environmental Monitoring Center, Isfahan Department of Environment, Isfahan, Iran
10 Cancer Prevention Research Center, Isfahan University of Medical Sciences, Isfahan, Iran
11 Information Technology Office, Isfahan University of Medical Sciences, Isfahan, Iran
12 Isfahan Meteorological Office, Isfahan, Iran
13 Isfahan Cardiovascular Research Center, Cardiovascular Research Institute, Isfahan University of Medical Sciences, Isfahan, Iran
Abstract
BACKGROUND: Air pollution is associated with increased risk of cardiovascular disease (CVD). This study aims to evaluate the correlation between air pollutants and hospitalization due to myocardial infarction (MI) as part of "correlation of air pollution with hospitalization and mortality of CVDs and respiratory diseases (CAPACITY) study".METHODS: This case-crossover study analyzed the data of 319 patients who were admitted with diagnosis of ST-elevation MI (STEMI) or non-ST-elevation MI (NSTEMI) in three main hospitals of Isfahan, Iran. The data of airborne pollutants including particulate matter < 10 µm (PM10), particulate matter < 2.5 µm (PM2.5), nitrogen dioxide (NO2), sulfur dioxide (SO2), carbon monoxide (CO), and ozone (O3) as well as climatic indices (temperature, wind speed, and humidity) at 24 hours, 48 hours, and one week before admission were extracted from CAPACITY study. The conditional logistic regression method was used to evaluate the correlation between air pollutants and MI hospitalization.RESULTS: 319 patients with mean age of 63.15 ± 28.14 years, including 238 men (74.6%), and 207 patients with STEMI (64.8%) were recruited. The risk of hospitalization significantly increased in patients with STEMI and 10-unit increment in PM2.5 at 48 hours before admission [odds ratio (OR) = 3.70, 95% confidence interval (CI): 1.69-7.69]. Although, majority of air pollutants had positive association with hospitalization in patients with NSTEMI, they were not statistically significant.CONCLUSION: This study showed significant association between elevated PM2.5 at 48 hours before admission and hospitalization of patients with STEMI. This finding can warn policymakers to design better care services for patients at risk of acute MI during the times of increased air pollution.
Keywords
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