Author + information
- Hedvig Bille Andersson,
- Milan Seth,
- John Sly,
- Eric Bates and
- Hitinder Gurm
Global Warming is projected to result in extreme weather events. Myocardial infarction can be triggered by environmental stress but there are few data on the impact of outdoor temperature on the risk of ST-elevation myocardial infarction (STEMI).
We identified all STEMI patients treated with primary percutaneous coronary intervention in Michigan, USA, from 2010-16. We obtained daily minimum, maximum and average temperatures on hospital zip code level. Absolute temperature change (ΔT) was defined as the maximum difference in temperature on the day of STEMI presentation and the day before. The association between ΔT and events of STEMI was assessed by hierarchical generalized linear mixed effects regression model with Poisson likelihood and a zip code random intercept.
We included 30,404 STEMI patients presenting at 45 hospitals. The mean number of patients per day varied across hospitals from 0-1 (95% CI 0-2). The median ΔT was 13°C (IQR 10-16°C). Larger ΔT was associated with an increased risk of STEMI (RR 1.02, 95% CI 1.00-1.03, p=0.011 for every 5°C change) (Figure 1). The effect was exaggerated by larger average daily temperatures (interaction p=0.006).
Sudden changes in outdoor temperature, especially at higher baseline temperature, are associated with an increased risk of STEMI. The anticipated increase in temperature fluctuation and a rise in average daily temperatures associated with Global Warming might result in an increase in the incidence of STEMI.
Poster Hall, Hall A/B
Saturday, March 10, 2018, 3:45 p.m.-4:30 p.m.
Session Title: Outcomes After Myocardial Infarction and Percutaneous Coronary Intervention
Abstract Category: 15. Interventional Cardiology: ACS/AMI/Hemodynamics and Pharmacology
Presentation Number: 1155-267
- 2018 American College of Cardiology Foundation