What is it with the weather and stroke?

McArthur, Kate; Dawson, Jesse; Walters, Matthew

doi:10.1586/ern.09.154

Cited by 63 publications

(48 citation statements)

References 57 publications

(54 reference statements)

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“…This study provides helpful results to clarify several discordances among previous studies and supports a recent review, 10 which reported that the influence of climate/weather on cerebrovascular risk is biologically plausible. One of the major contribution to this study derives by the use of an innovative source of meteorologic data (Reanalysis).…”

Section: Discussionsupporting

confidence: 86%

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Innovative Approaches Helpful to Enhance Knowledge on Weather-Related Stroke Events Over a Wide Geographical Area and a Large Population

Morabito

Crisci²,

Vallorani³

et al. 2011

Stroke

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Background and Purpose-Results on the effect of weather on stroke occurrences are still confusing and controversial.The aim of this study was to retrospectively investigate in Tuscany (central Italy) the weather-related stroke events through the use of an innovative source of weather data (Reanalysis) together with an original statistical approach to quantify the prompt/delayed health effects of both cold and heat exposures. Methods-Daily stroke hospitalizations and meteorologic data from the Reanalysis 2 Achieve were obtained for the period 1997 to 2007. Generalized linear and additive models and an innovative modeling approach, the constrained segmented distributed lag model, were applied. Results-Both daily averages and day-to-day changes of air temperature and geopotential height (a measure that approximates the mean surface pressure) were selected as independent predictors of all stroke occurrences. In particular, a 5°C temperature decrease was associated with 16.5% increase of primary intracerebral hemorrhage of people Ն65 years of age. A general short-term cold effect on hospitalizations limited to 1 week after exposure was observed and, for the first time, a clear harvesting effect (deficit of hospitalization) for cold-related primary intracerebral hemorrhage was described. Day-to-day changes of meteorologic parameters disclosed characteristic U-and J-shaped relationships with stroke occurrences. Conclusions-Thanks to the intrinsic characteristic of Reanalysis, these results might simply be implemented in an operative forecast system regarding weather-related stroke events with the aim to develop preventive health plans. (Stroke. 2011;42:593-600.)

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Section: Discussionsupporting

confidence: 86%

“…[1][2][3][4][5][6][7][8][9] Nevertheless, as reported in a recent review, 10 authors often described discordant effects of both air temperature and atmospheric pressure.…”

mentioning

confidence: 99%

Innovative Approaches Helpful to Enhance Knowledge on Weather-Related Stroke Events Over a Wide Geographical Area and a Large Population

Morabito

Crisci²,

Vallorani³

et al. 2011

Stroke

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“…For example, cold temperature may lead to vasoconstriction to divert blood flow to central vital organs, resulting in a rise in blood pressure. 35 Low outdoor temperature was strongly associated with high blood pressure in Chinese adults across a range of climatic conditions, 36 and hypertension is the most important risk factor for hemorrhagic stroke in China. Cold stress may theoretically increase oxygen demand of the brain, 37 which may in turn induce an excess of cerebral blood flow and exacerbate brain ischemia.…”

Section: Figurementioning

confidence: 99%

“…Dehydration on hot days may also increase blood viscosity and cholesterol levels, which in turn increases the likelihood of microvascular thrombosis and subsequent stroke. 35 Finally, high temperature is associated with worse endothelial function. 39 Further mechanistic studies are warranted to disentangle these complex relationships between ambient temperature and stroke.…”

Section: Figurementioning

confidence: 99%

Both low and high temperature may increase the risk of stroke mortality

Chen¹,

et al. 2013

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Objective: To examine temperature in relation to stroke mortality in a multicity time series study in China.Methods: We obtained data on daily temperature and mortality from 8 large cities in China. We used quasi-Poisson generalized additive models and distributed lag nonlinear models to estimate the accumulative effects of temperature on stroke mortality across multiple days, adjusting for long-term and seasonal trends, day of the week, air pollution, and relative humidity. We applied the Bayesian hierarchical model to pool city-specific effect estimates.Results: Both cold and hot temperatures were associated with increased risk of stroke mortality.The potential effect of cold temperature might last more than 2 weeks. The pooled relative risks of extreme cold (first percentile of temperature) and cold (10th percentile of temperature) temperatures over lags 0-14 days were 1.39 (95% posterior intervals [PI] 1.18-1.64) and 1.11 (95% PI 1.06-1.17), compared with the 25th percentile of temperature. In contrast, the effect of hot temperature was more immediate. The relative risks of stroke mortality over lags 0-3 days were 1.06 (95% PI 1.02-1.10) for extreme hot temperature (99th percentile of temperature) and 1.14 (95% PI 1.05-1.24) for hot temperature (90th percentile of temperature), compared with the 75th percentile of temperature.Conclusions: This study showed that both cold and hot temperatures were associated with increased risk of stroke mortality in China. Our findings may have important implications for stroke prevention in China. Stroke is one of the leading causes of death and disability worldwide.1 In contrast to developed countries, where stroke incidence declined by 42% over the last 4 decades, stroke incidence in developing countries doubled, surpassing that from developed countries.2 China is the largest developing country in the world and stroke burden is disproportionately high. In China, stroke mortality accounts for 19% of the total mortality, more than twice the mortality from ischemic heart disease (8%).3 Moreover, stroke patients in China have higher fatality than patients from developed countries. 4 Stroke has substantial medical, public health, and economic impacts in China.To reduce the burden of stroke, it is crucial to identify modifiable risk factors. It is wellknown that some traditional cerebrovascular risk factors, including hypertension, high cholesterol levels, obesity, smoking, and alcohol consumption, increased the risk for stroke. 5 However, the potential relationships of environmental risk factors and stroke have not been adequately studied in China.

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“…They found that youth reported more symptoms of post-traumatic stress disorder (PTSD). Thus, WHO Regional Office for Europe meeting report on climate change, extreme weather events and public health that was held in Bonn on 29-30 November 2010 highlights a significant impact of an increase of water (a flood) on human life and well-being" (McArthur, Dawson, & Walters, 2010).…”

Section: Source Of Risk Factormentioning

confidence: 99%

A Review Paper: The Role of the Internet in Promoting Youth Well-Being in Flood-Prone Communities

Zaremohzzabieh¹,

Samah²

2013

ASS

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Nowadays, the youth has been recognized as a distinct stage of human development. Along with all the problems that youth faced, the challenges of young people in some flood-prone communities have also appeared as a vital focus of research and policy efforts in the past decades, specifically after climate change has become a threat to the health and life of humanity, both now and in the future. Therefore the main attempt of the present study is to explore on how the Internet can improve youth well-being during the disruption arising from floods. For this purpose, the study highlights the concept of intolerance of uncertainly, youth resilience and information communication technology such as internet that provides an overview and a critical evaluation of a body of literature relating to the research topic. Two gaps in this study are addressed: (1) inadequate attention is given to understanding the causes and correlates of well-being among youth experiencing flooding and (2) existing studies in the context of disaster recovery fails to show how the internet enables youth to be resilient during disruption of floods and after. It is hoped that it may compel social and health policymakers to develop youth health development programs to disseminate well-being to difficult-to-reach youths in the early stages of flood situations.

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What is it with the weather and stroke?

Cited by 63 publications

References 57 publications

Innovative Approaches Helpful to Enhance Knowledge on Weather-Related Stroke Events Over a Wide Geographical Area and a Large Population

Innovative Approaches Helpful to Enhance Knowledge on Weather-Related Stroke Events Over a Wide Geographical Area and a Large Population

Both low and high temperature may increase the risk of stroke mortality

A Review Paper: The Role of the Internet in Promoting Youth Well-Being in Flood-Prone Communities

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