Influence of meteorological factors on acute aortic events in a subtropical territory

Law, Yuk; Chan, YH; Cheng, Swk

doi:10.1016/j.asjsur.2015.11.002

Cited by 18 publications

(19 citation statements)

References 36 publications

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“…The increased mortality rate for cardio-and cerebrovascular patients under extreme weather conditions (extreme cold and heat) is also known 8,9 . Several articles have been published on this subject, although many controversies exist as to whether a correlation is present [10][11][12][13][14][15][16] . We think the controversy stems from the differences in local meteorological conditions, observed parameters, and methodologies, the combination of which leads to different conclusions.…”

Section: Introductionmentioning

confidence: 99%

“…Several studies discuss the connection between cardiovascular diseases (pulmonary embolism, ruptured aortic aneurysm, acute coronary syndrome, aortic dissection) and changes in meteorological parameters 10,17,18 . Several articles examine the effects of weather on aneurysms and dissections [10][11][12][13][14][15][16] . All of these strive to prove a connection between the given medical condition and the meteorological parameter or its changes.…”

Section: Introductionmentioning

confidence: 99%

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The Effects of Changing Meteorological Parameters on Fatal Aortic Catastrophes

Szilágyi

Berczeli

Lovas

et al. 2020

Preprint

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Introduction: Over the spam of the last decade, medical research has been increasingly putting greater emphasis on the study of meteorological parameters due to their connection to cardiovascular diseases. The main goal of this study was to explore the relationship between fatal aortic catastrophes and changes in atmospheric pressure and temperature. Methods: We used a Cox process model to quantify the effects of environmental factors on sudden deaths resulting from aortic catastrophes. We used transfer entropy to draw conclusion about the causal connection between mortality and meteorological parameters. Our main tool is a computer program which we developed earlier in order to evaluate the relationship between pulmonary embolism mortality and the weather on data sets comprised of aortic aneurysm (AA) and acute aortic dissection (AAD) cases, where one of these two medical conditions had led to the fatal rupture of the aorta. Our source for these cases were the autopsy databases of Semmelweis University, from the time period of 1994 to 2014. We have examined 160 aneurysm and 130 dissection cases in relation to changes in meteorological parameters. The algorithm implemented in our program is based on a non-parametric a Cox process model. It is capable to split slowly varying unknown global trends from fluctuations potentially caused by weather. Furthermore, it allows us to explore complex non-linear interactions between meteorological parameters and mortality. Results: The model measures the relative growth of the expected number of events on the n th day caused by the deviation of environmental parameters from its mean value. The connection between ruptured aortic aneurysms (rAA) and changes in atmospheric pressure is more significant than their connection with mean daily temperatures. With the increase in atmospheric pressure, the rate of rAA mortality also increased. The effects of meteorological parameters were weaker for deaths resulting from acute aortic dissections (AAD), although low mean daily temperatures increased the intensity of occurrence for AAD-related deaths. Conclusion: The occurrence rate of fatal aortic catastrophes showed a slight dependence on the two examined parameters within our groups.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The Effects of Changing Meteorological Parameters on Fatal Aortic Catastrophes

Szilágyi

Berczeli

Lovas

et al. 2020

Preprint

View full text Add to dashboard Cite

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The Effects of Changing Meteorological Parameters on Fatal Aortic Catastrophes

Szilágyi

Berczeli

Lovas

et al. 2019

Preprint

View full text Add to dashboard Cite

Introduction: Over the spam of the last decade, medical research has been increasingly putting greater emphasis on the study of meteorological parameters due to their connection to cardiovascular diseases. The main goal of this study was to explore the relationship between fatal aortic catastrophes and changes in atmospheric pressure and temperature. Methods: We used a Cox process model to quantify the effects of environmental factors on sudden deaths resulting from aortic catastrophes. We used transfer entropy to draw conclusion about the causal connection between mortality and meteorological parameters. Our main tool is a computer program which we developed earlier in order to evaluate the relationship between pulmonary embolism mortality and the weather on data sets comprised of aortic aneurysm (AA) and acute aortic dissection (AAD) cases, where one of these two medical conditions had led to the fatal rupture of the aorta. Our source for these cases were the autopsy databases of Semmelweis University, from the time period of 1994 to 2014. We have examined 160 aneurysm and 130 dissection cases in relation to changes in meteorological parameters. The algorithm implemented in our program is based on a non-parametric a Cox process model. It is capable to split slowly varying unknown global trends from fluctuations potentially caused by weather. Furthermore, it allows us to explore complex non-linear interactions between meteorological parameters and mortality. Results: The model measures the relative growth of the expected number of events on the nth day caused by the deviation of environmental parameters from its mean value. The connection between ruptured aortic aneurysms (rAA) and changes in atmospheric pressure is more significant than their connection with mean daily temperatures. With the increase in atmospheric pressure, the rate of rAA mortality also increased. The effects of meteorological parameters were weaker for deaths resulting from acute aortic dissections (AAD), although low mean daily temperatures increased the intensity of occurrence for AAD-related deaths. Conclusion: The occurrence rate of fatal aortic catastrophes showed a slight dependence on the two examined parameters within our groups. Keywords: acute aortic dissection; ruptured aortic aneurysm; Cox process model; non-parametric approach; statistical learning

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“…Characterizing and understanding these variations is essential to ensure an optimal management of medical resources throughout the year and treatment strategy during vulnerable periods. Several studies have investigated the influence of climatic conditions on AAS [1][2][3][4][5][6] , reporting a significant occurrence of AAS in the morning and a correlation with low temperature and winter season [2][3][4][5] . However, most of these studies are descriptive or investigate the impact of daily temperature only 5 , even if climatic variation throughout several consecutive days may have also been of major importance 3 .…”

mentioning

confidence: 99%

Impact of Relative Change in Temperature and Atmospheric Pressure on Acute Aortic Syndrome Occurrence in France

Guimbretière

Nusinovici

Monnot³

et al. 2020

Sci Rep

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Acute aortic syndromes (AAS) have been related to significant circadian and seasonal conditions. We used time series analyses to study the impact of meteorological variations on AAS occurrence. We retrospectively assessed 140 patients presenting with AAS over a 6-year period in a French university hospital. Average daily temperature (T) and atmospheric pressure (AP) at the location of the event were collected within the previous 10 days, and their association with AAS investigated with generalized additive models. A decrease in temperature of more than 5 °C within the previous seven days was significantly associated with an increased risk of AAS occurrence (OR equal to 1.86 [1.06; 3.44]). Subgroup analysis revealed that the risk was only significant among normotensive individuals (n = 41) free from blood pressure lowering medication (OR equal to 2.3 [1.05; 5.37]), but not among hypertensive individuals under blood pressure lowering medication despite a larger patient number (n = 99). Similarly, only among the subgroup of normotensive individuals a decrease of AP between 2 and 4 kPa within the previous 3 days was associated with an increased risk of AAS (OR equal to 2.93 [1.1; 8.15]) and an increased between 2 and 4 kPa was associated with a decreased risk (OR equal to 0.59 [0.36; 1.00]). Variations of meteorological conditions (temperature and AP) within the previous week seem to have effects on triggering AAS especially among the population free from blood pressure lowering medication.

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Influence of meteorological factors on acute aortic events in a subtropical territory

Abstract: This is the first pan-territory study to show an attributable effect of ambient temperature on acute aortic events. This paper confirms that even in a subtropical country, meteorological variables were important factors influencing acute aortic events.

Cited by 18 publications

References 36 publications

The Effects of Changing Meteorological Parameters on Fatal Aortic Catastrophes

The Effects of Changing Meteorological Parameters on Fatal Aortic Catastrophes

The Effects of Changing Meteorological Parameters on Fatal Aortic Catastrophes

Impact of Relative Change in Temperature and Atmospheric Pressure on Acute Aortic Syndrome Occurrence in France

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