Extreme heat triggers first-time acute myocardial infarction: Evidence from a case-crossover study in Tianjin, China
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Le résumé fourni par la source
Objective: To assess whether extreme high temperatures (EHT) and heat waves (HW) are associated with acute myocardial infarction (AMI) risk, and to determine whether these effects differ between first-time and recurrent events. Methods: We performed a time-stratified case-crossover study of 7573 AMI admissions in Tianjin, China (2021-2023). Meteorological exposures were derived from ground-based monitoring and satellite products. Conditional logistic regression with distributed lag nonlinear models quantified immediate and delayed associations between temperature and AMI, stratified by event type (first-time vs recurrent). Effect modification was examined by age, sex, and ST-segment elevation. Results: Both EHT and HW were associated with increased AMI risk, with effects concentrated among first-time events. The strongest single-day associations for first-time AMI were observed 4-5 days after exposure (peaking at lag 4 for EHT_90TH: OR = 1.1594; 95 % CI: 1.0622-1.2655), while cumulative risks peaked across lag windows of 4-6 days (peaking at lag 0-6 for EHT_90TH: OR = 1.1564; 95 % CI: 1.0558-1.2665). Among first-time AMI, higher risks were seen in men, individuals <65 years, and those with non-ST-segment elevation myocardial infarction. Conclusions: Short-term exposure to extreme heat significantly increases the risk of first-time AMI, but not recurrent events. Risk persists for several days after exposure, particularly among younger adults, men, and NSTEMI patients. These findings highlight the need for targeted heat-health messaging, early recognition of symptoms, and preventive strategies tailored to individuals at risk of a first AMI in the era of climate change.
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Le contrôle bibliographique ouvert
DOI retrouvé dans Crossref DOI retrouvé ; titre concordant.
- Titre Crossref
- Extreme heat triggers first-time acute myocardial infarction: Evidence from a case-crossover study in Tianjin, China
- Date Crossref
- 01/12/2025
- Éditeur
- Elsevier BV
- Type
- journal-article
Ce recoupement confirme des métadonnées liées au DOI. Il ne confirme ni la méthode ni les conclusions de l’étude, et il ne compte pas comme une seconde source scientifique indépendante.
Où se fait cette recherche
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Tianjin Medical University Tianjin Key Laboratory of Environment pays non établi dans la noticeUniversité ou école supérieure
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TEDA International Cardiovascular Hospital Department of Endocrinology pays non établi dans la noticeÉtablissement de santé
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Tianjin Meteorological Bureau pays non établi dans la noticeOrganisme public
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Monash University pays non établi dans la noticeUniversité ou école supérieure
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Queensland University of Technology pays non établi dans la noticeUniversité ou école supérieure
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Chinese Center For Disease Control and Prevention pays non établi dans la noticeOrganisme public
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School of Public Health Department of Occupational and Environmental Health pays non établi dans la noticeUniversité ou école supérieure
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Tianjin Environmental Meteorological Center pays non établi dans la noticeInstitution
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National Institute of Environmental Health pays non établi dans la noticeStructure de recherche
Tianjin Key Laboratory of Environment — Tianjin Medical University, Department of Endocrinology — TEDA International Cardiovascular Hospital et Tianjin Meteorological Bureau, avec 6 autres affiliations.
Une affiliation ne permet pas de déduire la nationalité d’un auteur.