Short-term exposure to ambient air pollution increased in-hospital non-ST-elevation myocardial infarction mortality risk, but not ST-elevation myocardial infarction: case-crossover based evidence from Beijing, China

BackgroundPrevious studies have shown that air pollution affects the incidence of ST-segment elevation myocardial infarction (STEMI) and non-ST-segment elevation myocardial infarction (NSTEMI) differently. However, limited studies have examined the impact of air pollution on the mortality of these a...

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Main Authors: Yakun Zhao, Yuxiong Chen, Yanbo Liu, Siqi Tang, Yitao Han, Yuansong Zhuang, Jia Fu, Zhen’ge Chang, Xinlong Zhao, Jinyan Lei, Zhongjie Fan
Format: Article
Language:English
Published: Frontiers Media S.A. 2025-06-01
Series:Frontiers in Public Health
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Online Access:https://www.frontiersin.org/articles/10.3389/fpubh.2025.1613082/full
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author Yakun Zhao
Yakun Zhao
Yuxiong Chen
Yuxiong Chen
Yanbo Liu
Siqi Tang
Siqi Tang
Yitao Han
Yuansong Zhuang
Jia Fu
Jia Fu
Zhen’ge Chang
Xinlong Zhao
Jinyan Lei
Zhongjie Fan
author_facet Yakun Zhao
Yakun Zhao
Yuxiong Chen
Yuxiong Chen
Yanbo Liu
Siqi Tang
Siqi Tang
Yitao Han
Yuansong Zhuang
Jia Fu
Jia Fu
Zhen’ge Chang
Xinlong Zhao
Jinyan Lei
Zhongjie Fan
author_sort Yakun Zhao
collection DOAJ
description BackgroundPrevious studies have shown that air pollution affects the incidence of ST-segment elevation myocardial infarction (STEMI) and non-ST-segment elevation myocardial infarction (NSTEMI) differently. However, limited studies have examined the impact of air pollution on the mortality of these acute myocardial infarction (AMI) subtypes.MethodsUsing AMI hospitalization data from Beijing (2013–2019), we applied a time-stratified case-crossover design with conditional Poisson regression models to evaluate associations between short-term exposure to six pollutants (PM2.5, PM10, SO2, NO2, CO, and O3) and daily in-hospital mortality for overall AMI, STEMI, and NSTEMI. Subgroup analyses based on demographics, comorbidities, and coronary artery disease (CAD) history were conducted to identify vulnerable populations. Additionally, a retrospective case–control analysis with multivariable logistic regression involved all AMI admission cases, was conducted to explore whether the association between air pollution exposure and in-hospital AMI mortality is independent of other mortality risk factors.ResultsDuring the study period, there were 149,632 AMI admissions, with 10,983 in-hospital deaths (4,361 STEMI and 4,299 NSTEMI). Elevated levels of PM2.5, PM10, SO2, NO2, and CO on admission day were significantly associated with increased in-hospital mortality for overall AMI and NSTEMI, but not for STEMI. The effect of pollutants on NSTEMI mortality was greater in patients with old myocardial infarction (OMI) or percutaneous coronary intervention/coronary artery bypass grafting (PCI/CABG) history. In case–control analysis with multivariable logistic regression, increased pollutants concentration remained significantly associated with in-hospital NSTEMI mortality after adjusting for other mortality risk factors.ConclusionShort-term exposure to PM2.5, PM10, SO2, NO2, and CO increases the risk of in-hospital AMI mortality, particularly for NSTEMI. Individuals with CAD history require more protective measures due to the vulnerability to air pollution.
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spelling doaj-art-8df2298ea94842398df94bc91cd210302025-08-20T02:36:12ZengFrontiers Media S.A.Frontiers in Public Health2296-25652025-06-011310.3389/fpubh.2025.16130821613082Short-term exposure to ambient air pollution increased in-hospital non-ST-elevation myocardial infarction mortality risk, but not ST-elevation myocardial infarction: case-crossover based evidence from Beijing, ChinaYakun Zhao0Yakun Zhao1Yuxiong Chen2Yuxiong Chen3Yanbo Liu4Siqi Tang5Siqi Tang6Yitao Han7Yuansong Zhuang8Jia Fu9Jia Fu10Zhen’ge Chang11Xinlong Zhao12Jinyan Lei13Zhongjie Fan14Department of Cardiology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, ChinaDepartment of Internal Medicine, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, ChinaDepartment of Cardiology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, ChinaDepartment of Internal Medicine, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, ChinaDepartment of Healthcare, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, ChinaDepartment of Cardiology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, ChinaDepartment of Internal Medicine, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, ChinaDepartment of Cardiology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, ChinaDepartment of Cardiology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, ChinaDepartment of Cardiology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, ChinaIntensive Care Unit, The First Medical Center of Chinese PLA General Hospital, Beijing, ChinaDepartment of Cardiology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, ChinaDepartment of Cardiology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, ChinaDepartment of Cardiology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, ChinaDepartment of Cardiology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, ChinaBackgroundPrevious studies have shown that air pollution affects the incidence of ST-segment elevation myocardial infarction (STEMI) and non-ST-segment elevation myocardial infarction (NSTEMI) differently. However, limited studies have examined the impact of air pollution on the mortality of these acute myocardial infarction (AMI) subtypes.MethodsUsing AMI hospitalization data from Beijing (2013–2019), we applied a time-stratified case-crossover design with conditional Poisson regression models to evaluate associations between short-term exposure to six pollutants (PM2.5, PM10, SO2, NO2, CO, and O3) and daily in-hospital mortality for overall AMI, STEMI, and NSTEMI. Subgroup analyses based on demographics, comorbidities, and coronary artery disease (CAD) history were conducted to identify vulnerable populations. Additionally, a retrospective case–control analysis with multivariable logistic regression involved all AMI admission cases, was conducted to explore whether the association between air pollution exposure and in-hospital AMI mortality is independent of other mortality risk factors.ResultsDuring the study period, there were 149,632 AMI admissions, with 10,983 in-hospital deaths (4,361 STEMI and 4,299 NSTEMI). Elevated levels of PM2.5, PM10, SO2, NO2, and CO on admission day were significantly associated with increased in-hospital mortality for overall AMI and NSTEMI, but not for STEMI. The effect of pollutants on NSTEMI mortality was greater in patients with old myocardial infarction (OMI) or percutaneous coronary intervention/coronary artery bypass grafting (PCI/CABG) history. In case–control analysis with multivariable logistic regression, increased pollutants concentration remained significantly associated with in-hospital NSTEMI mortality after adjusting for other mortality risk factors.ConclusionShort-term exposure to PM2.5, PM10, SO2, NO2, and CO increases the risk of in-hospital AMI mortality, particularly for NSTEMI. Individuals with CAD history require more protective measures due to the vulnerability to air pollution.https://www.frontiersin.org/articles/10.3389/fpubh.2025.1613082/fullair pollutionacute myocardial infarctionST-elevation myocardial infarctionnon-ST-elevation myocardial infarctionin-hospital mortalitycase-crossover
spellingShingle Yakun Zhao
Yakun Zhao
Yuxiong Chen
Yuxiong Chen
Yanbo Liu
Siqi Tang
Siqi Tang
Yitao Han
Yuansong Zhuang
Jia Fu
Jia Fu
Zhen’ge Chang
Xinlong Zhao
Jinyan Lei
Zhongjie Fan
Short-term exposure to ambient air pollution increased in-hospital non-ST-elevation myocardial infarction mortality risk, but not ST-elevation myocardial infarction: case-crossover based evidence from Beijing, China
Frontiers in Public Health
air pollution
acute myocardial infarction
ST-elevation myocardial infarction
non-ST-elevation myocardial infarction
in-hospital mortality
case-crossover
title Short-term exposure to ambient air pollution increased in-hospital non-ST-elevation myocardial infarction mortality risk, but not ST-elevation myocardial infarction: case-crossover based evidence from Beijing, China
title_full Short-term exposure to ambient air pollution increased in-hospital non-ST-elevation myocardial infarction mortality risk, but not ST-elevation myocardial infarction: case-crossover based evidence from Beijing, China
title_fullStr Short-term exposure to ambient air pollution increased in-hospital non-ST-elevation myocardial infarction mortality risk, but not ST-elevation myocardial infarction: case-crossover based evidence from Beijing, China
title_full_unstemmed Short-term exposure to ambient air pollution increased in-hospital non-ST-elevation myocardial infarction mortality risk, but not ST-elevation myocardial infarction: case-crossover based evidence from Beijing, China
title_short Short-term exposure to ambient air pollution increased in-hospital non-ST-elevation myocardial infarction mortality risk, but not ST-elevation myocardial infarction: case-crossover based evidence from Beijing, China
title_sort short term exposure to ambient air pollution increased in hospital non st elevation myocardial infarction mortality risk but not st elevation myocardial infarction case crossover based evidence from beijing china
topic air pollution
acute myocardial infarction
ST-elevation myocardial infarction
non-ST-elevation myocardial infarction
in-hospital mortality
case-crossover
url https://www.frontiersin.org/articles/10.3389/fpubh.2025.1613082/full
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