Non-optimum temperature increases risk and burden of acute myocardial infarction onset: A nationwide case-crossover study at hourly level in 324 Chinese cities

Jiang, Yu-Long; Hu, Jialu; P, Li; Li, Huichu; Ji, John S.; Fang, Wei-Yi; Yan, Hongbing; Chen, Jiyan; Wang, Weimin; Xiang, Dingcheng; Su, Xi; Yu, Bo; Wang, Yan; Wang, Lefeng; Li, Chunjie; Chen, Yundai; Zhao, Dong; Kan, Haidong; Ge, Junbo; Huo, Yong; Chen, Renjie

doi:10.1016/j.eclinm.2022.101501

Cited by 32 publications

(33 citation statements)

References 47 publications

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“…No association was found between high temperature and acute myocardial infarction (AMI) in Beijing [ 45 ]. The highest temperature had lowest risk of acute myocardial infarction onset at the national level in a 324 Chinese cities study [ 46 ].…”

Section: Discussionmentioning

confidence: 99%

Association between ambient temperature and cardiovascular diseases related hospital admissions in Lanzhou, China

Jin

Meng

Wang

et al. 2023

Heliyon

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Section: Discussionmentioning

confidence: 99%

Association between ambient temperature and cardiovascular diseases related hospital admissions in Lanzhou, China

Jin

Meng

Wang

et al. 2023

Heliyon

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“…[29][30][31] In addition, our main model included natural cubic B splines with 3 degrees of freedom of relative humidity, precipitation, cloud cover, wind speed, and a categorical variable of the holiday to control for their potential confounding effects. 28,32 We estimated the cumulative RR in subsequent analyses over a duration of lag days until the RR approached 1.0. To better interpret the RR associated with nonoptimum temperature, we chose a reference temperature that corresponds to the lowest risk (ie, minimum-mortality temperature) in the exposureresponse curve and reported the RRs of suicide death and their 95% CI at the extremely high temperature (the 99th percentile) compared with the reference temperature.…”

Section: Discussionmentioning

confidence: 99%

“…33 This method could provide more accurate estimates of disease burden by accounting for the potentially complex lag patterns in the temperature-associated risks. 32,33 We calculated the attributable fraction (AF) at the national level and regional level. We calculated the empirical CIs (eCIs) of AF through Monte Carlo simulations.…”

Section: Fractions Of Suicide Death Associated With Nonoptimum Temper...mentioning

confidence: 99%

Assessing the Burden of Suicide Death Associated With Nonoptimum Temperature in a Changing Climate

et al. 2023

Self Cite

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ImportanceFew studies have projected future suicide burden associated with daily temperatures in a warming climate.ObjectivesTo assess the burden of suicide death associated with daily nonoptimal temperature and to project the change of suicide burden associated with nonoptimal temperature in different regions and seasons under various climate change scenarios.Design, Setting, and ParticipantsBetween January 1, 2013, and December 31, 2019, we conducted a time-stratified, case-control study among more than 430 000 individual suicide decedents from all counties in mainland China.ExposuresDaily meteorological data were obtained from the European Centre for Medium-Range Weather Forecasts Reanalysis Fifth Generation (ERA5) reanalysis product. Historical and future temperature series were projected under 3 scenarios of greenhouse-gas emissions from 1980 to 2099, with 10 general circulation models.Main Outcomes and MeasuresThe relative risk (RR) and burden of suicide death associated with nonoptimal temperature (ie, temperatures greater than or less than minimum-mortality temperature); the change of suicide burden associated with future climate warming in different regions and seasons under various climate change scenarios.ResultsOf 432 008 individuals (mean [SD] age; 57.6 [19.0] years; 253 093 male [58.6%]) who died by suicide, 85.8% (370 577) had a middle school education or less. The temperature-suicide associations were approximately linear, with increasing death risks at higher temperatures. The excess risk was more prominent among older adults (ie, ≥75 years; RR, 1.71; 95% CI, 1.46-1.99) and those with low education level (ie, middle school education or less; RR, 1.46; 95% CI, 1.36-1.57). There were 15.2% suicide deaths (95% estimated CI [eCI], 14.6%-15.6%) associated with nonoptimal temperature nationally. Consistent and drastic increases in excess suicide deaths over this century were predicted under the high-emission scenario, whereas a leveling-off trend after the mid–21st century was predicted under the medium- and low-emission scenarios. Nationally, compared with the historical period (1980-2009), excess suicide deaths were predicted to increase by 8.3% to 11.4% in the 2050s and 8.5% to 21.7% in the 2090s under the 3 scenarios. The projected percentage increments of excess suicide deaths were predicted to be greater in the South (55.0%; 95% eCI, 30.5%-85.6%) and in winter (54.5%; 95% eCI, 30.4%-77.0%) in the 2090s under the high-emission scenario.Conclusions and RelevanceFindings of this nationwide case-control study suggest that higher temperature may be associated with the risk and burden of suicide death in China. These findings highlight the importance of implementing effective climate policies to reduce greenhouse gas emissions and tailoring public health policies to adapt to global warming.

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“…The possible reason is that in our data, the average age of the women was higher than that of the men, and the elderly population accounted for a large proportion of women. According to certain research, women have lower thermogenic muscle mass than men, and because of the increased blood distribution in the uterus and ovary, it is more di cult for women to regulate body temperature [11] . It is also believed that estrogen enhances vasoconstriction activity under cold induction, which is associated with estrogen-dependent increased expression of cold-sensitive α (2C) -ARs [27] .…”

Section: Discussionmentioning

confidence: 99%

“…At present, China has carried out several national time series analysis studies covering 184-272 cities and elaborated on the impact of low and high temperatures on AMI from different perspectives such as short-term temperature change [9] and nonoptimal temperature [10][11] . However, different cities in China may have varied temperature effects on AMI due to different climatic conditions, geographic features, and locations.…”

Section: Introductionmentioning

confidence: 99%

Relationship between temperature and fatal myocardial infarction:A time series study in Xuzhou, China, from 2018 to 2020

Miao

Bao

Lou

et al. 2023

Preprint

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Background It is widely known that the incidence rate and short-term mortality of acute myocardial infarctions (AMIs) are generally higher during the winter months. The goal of this study was to determine how the temperature of the environment influences fatal acute myocardial infarctions in Xuzhou. Methods This observational study used the daily meteorological data and the data on the cause of death from acute myocardial infarction in Xuzhou from January 1, 2018, to December 31, 2020. After controlling meteorological variables and pollutants, the distributed nonlinear lag model (DLNM) was used to estimate the correlation between temperature and lethal AMI. Results A total of 27712 patients with fatal AMI were enrolled. 82.4% were over the age of 65, and 50.9% were men. Relative to the reference temperature (15 ℃), the 30-day cumulative RRs of the extremely cold temperature (− 2 ℃) for the general population, women, and people aged 65 years and above were 4.66 (95% CI: 1.76, 12.30), 15.29 (95% CI: 3.94, 59.36), and 7.13 (95% CI: 2.50, 20.35), respectively. The 30-day cumulative RRs of the cold temperature (2 ℃) for the general population, women, and people aged 65 years and above were 2.55 (1.37, 4.75), 12.78 (2.24, 5.36), and 3.15 (1.61, 6.16), respectively. No statistically significant association was observed between high temperatures and the risk of fatal AMI. The influence of the cold effect (1st and 10th) was at its peak on that day, and the entire cold effect persisted for 30 days. Temperature extremes had an effect on the lag patterns of distinct age and gender stratifications. Conclusion According to this study, the risk of fatal AMI increases significantly in cold weather but not in hot weather. Women above the age of 65 are particularly sensitive to severe weather events. The influence of frigid weather on public health should also be considered.

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Non-optimum temperature increases risk and burden of acute myocardial infarction onset: A nationwide case-crossover study at hourly level in 324 Chinese cities

Cited by 32 publications

References 47 publications

Association between ambient temperature and cardiovascular diseases related hospital admissions in Lanzhou, China

Association between ambient temperature and cardiovascular diseases related hospital admissions in Lanzhou, China

Assessing the Burden of Suicide Death Associated With Nonoptimum Temperature in a Changing Climate

Relationship between temperature and fatal myocardial infarction:A time series study in Xuzhou, China, from 2018 to 2020

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