The effects of high temperature on cardiovascular admissions in the most populous tropical city in Vietnam

Phung, Dung; Lee, Hyewon; Thai, Phong K.; Rutherford, Shannon; Wang, Xiaoming; Nguyen, Minh; Manh, Cuong; Nguyen, Nga Huy; Alam, Noore; Chu, Cordia

doi:10.1016/j.envpol.2015.06.004

Cited by 75 publications

(46 citation statements)

References 49 publications

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“…The definition of cold spells or heatwaves based on percentiles is common in studies dealing with the effect of environmental temperature on health [11]. The biggest effect for extreme heat has been reported to occurred immediately [28, 29], while for extreme cold the effect might last until several days after the cold spells [11, 30]. Therefore, we considered one exposure to assess extreme heat (days during heatwaves), and three different exposures when studying extreme cold weather: cold spells; the accumulative 3-day effect of cold spells, i.e.…”

Section: Methodsmentioning

confidence: 99%

Effects of extreme temperatures on cardiovascular emergency hospitalizations in a Mediterranean region: a self-controlled case series study

et al. 2017

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BackgroundCold spells and heatwaves increase mortality. However little is known about the effect of heatwaves or cold spells on cardiovascular morbidity. This study aims to assess the effect of cold spells and heatwaves on cardiovascular diseases in a Mediterranean region (Catalonia, Southern Europe).MethodsWe conducted a population-based retrospective study. Data were obtained from the System for the Development of Research in Primary Care and from the Catalan Meteorological Service. The outcome was first emergency hospitalizations due to coronary heart disease, stroke, or heart failure. Exposures were: cold spells; cold spells and 3 or 7 subsequent days; and heatwaves. Incidence rate ratios (IRR) and 95% confidence intervals were calculated using the self-controlled case series method. We accounted for age, time trends, and air pollutants; results were shown by age groups, gender or cardiovascular event type.ResultsThere were 22,611 cardiovascular hospitalizations in winter and 17,017 in summer between 2006 and 2013. The overall incidence of cardiovascular hospitalizations significantly increased during cold spells (IRR = 1.120; CI 95%: 1.10–1.30) and the effect was even stronger in the 7 days subsequent to the cold spell (IRR = 1.29; CI 95%: 1.22–1.36). Conversely, cardiovascular hospitalizations did not increase during heatwaves, neither in the overall nor in the stratified analysis.ConclusionsCold spells but not heatwaves, increased the incidence of emergency cardiovascular hospitalizations in Catalonia. The effect of cold spells was greater when including the 7 subsequent days. Such knowledge might be useful to develop strategies to reduce the impact of extreme temperature episodes on human health.Electronic supplementary materialThe online version of this article (doi:10.1186/s12940-017-0238-0) contains supplementary material, which is available to authorized users.

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Section: Methodsmentioning

confidence: 99%

Effects of extreme temperatures on cardiovascular emergency hospitalizations in a Mediterranean region: a self-controlled case series study

et al. 2017

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“…A total of 210 papers investigated the relationships between daily temperature and human mortality counts for non-external causes using the DLNM method. Excluding the literature from the repeated study areas, 16 papers 1,[11][12][13][14][15][16][17][18][19][20][21][22][23][24][25] of which are chosen. These studies involved 420 locations from 30 countries, covering six continents (Antarctica was excluded).…”

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confidence: 99%

Mapping the increased minimum mortality temperatures in the context of global climate change

et al. 2019

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Minimum mortality temperature (MMT) is an important indicator to assess the temperature-mortality relationship. It reflects human adaptability to local climate. The existing MMT estimates were usually based on case studies in data rich regions, and limited evidence about MMT was available at a global scale. It is still unclear what the most significant driver of MMT is and how MMT will change under global climate change. Here, by analysing MMTs in 420 locations covering six continents (Antarctica was excluded) in the world, we found that although the MMT changes geographically, it is very close to the local most frequent temperature (MFT) in the same period. The association between MFT and MMT is not changed when we adjust for latitude and study year. Based on the MFT~MMT association, we estimate and map the global distribution of MMTs in the present (2010s) and the future (2050s) for the first time.

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“…In mehreren Untersuchungen wurden Hitze-Effekte auf die Morbidität der Bevölkerung untersucht und nachgewiesen. In der größten Stadt im Süden Vietnams (Tropen) zeigten stationäre Aufnahmen (Krankenhausdaten) wegen kardiovaskulärer Erkrankungen eine Risikozunahme von 5 %, die bei den sozial schwächer gestellten Medicaid-Patienten bis zu 12,9 % an Hitzetagen erreichte [33].…”

Section: Diskussionunclassified

Morbidität durch Hitze – eine Analyse der Krankenhauseinweisungen per Rettungseinsatz während einer Hitzewelle 2015 in Frankfurt/Main

et al. 2018

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Heatwaves are gaining in importance due to increasing climatic changes. They can impair health and increase mortality. A comparison of studies is difficult because of differences in the definition of a heatwave used and/or different populations studied. In this study, morbidity data were collected using the web-based IVENA system. This system registers hospital admissions with diagnosis by the emergency medical services. We analysed hospital admissions in Frankfurt/Main during June-August of 2014-2016. These periods included a heatwave in July 2015 (per definition>32°C for at least 5 days/more than 4 days). On days with "heatwave", there was a 22% increase in hospital admissions of patients brought in by the emergency services (excess morbidity). Considering only "heat-related diagnosis", the increase was 300%. In addition to the increase in hospital admissions on "heatwave" days, there was also a direct correlation between temperature and hospital admissions over the summer days. Using the data on hospital admission of patients brought in by the emergency services turned out to be a valid marker for "heat morbidity".

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The effects of high temperature on cardiovascular admissions in the most populous tropical city in Vietnam

Cited by 75 publications

References 49 publications

Effects of extreme temperatures on cardiovascular emergency hospitalizations in a Mediterranean region: a self-controlled case series study

Effects of extreme temperatures on cardiovascular emergency hospitalizations in a Mediterranean region: a self-controlled case series study

Mapping the increased minimum mortality temperatures in the context of global climate change

Morbidität durch Hitze – eine Analyse der Krankenhauseinweisungen per Rettungseinsatz während einer Hitzewelle 2015 in Frankfurt/Main

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