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Volume 9, Issue 4 (Autumn 2023)
Caspian J Neurol Sci 2023, 9(4): 268-277 |
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Saraei G, Mehraeen P, Soodmand M, Khoshamuoz S, Majidi S A, Ghanbari A, et al . Relationship of Meteorological Variable and Cerebrovascular Events: An Ecological Time Series Study. Caspian J Neurol Sci 2023; 9 (4) :268-277
URL: http://cjns.gums.ac.ir/article-1-669-en.html
URL: http://cjns.gums.ac.ir/article-1-669-en.html
Ghazal Saraei * 
1, Parisa Mehraeen2 , Mostafa Soodmand2 , Sara Khoshamuoz2 , Seyed Ali Majidi3 , Ali Ghanbari4 , Shadi Qatran2 , Mohammad Taghi Moghadamnia2
1, Parisa Mehraeen2 , Mostafa Soodmand2 , Sara Khoshamuoz2 , Seyed Ali Majidi3 , Ali Ghanbari4 , Shadi Qatran2 , Mohammad Taghi Moghadamnia2
1- Research and Technology Deputy, Guilan University of Medical Sciences, Rasht, Iran
2- Department of Medical-Surgical Nursing, School of Nursing and Midwifery, Guilan University of Medical Sciences, Rasht, Iran
3- Department of Nursing & Midwifery, Rasht Branch, Islamic Azad University, Rasht, Iran
4- Department of Epidemiology and Biostatistics, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
2- Department of Medical-Surgical Nursing, School of Nursing and Midwifery, Guilan University of Medical Sciences, Rasht, Iran
3- Department of Nursing & Midwifery, Rasht Branch, Islamic Azad University, Rasht, Iran
4- Department of Epidemiology and Biostatistics, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
Abstract: (326 Views)
Background: Climatic conditions contribute to changes in red blood cells, thrombocyte count, and
blood pressure. In cold weather, blood viscosity increases, but increasing body temperature raises
coagulation factors. Also, plasma fibrinogen concentrations are higher in older patients. All of these
factors can contribute to the incidence of stroke.
Objectives: Our purpose was to assess the relationships between metrological factors and the rate
of stroke patients in the north of Iran.
Materials & Methods: We used a time-series analysis to investigate the association between
metrological factors and hospital admission of cerebrovascular events from 2014 to 2019 using
distributed lag nonlinear models.
Results: Hot temperature (≥34°C) was significantly associated with an increased risk of stroke
admission. In the general population, severe cold (≤0°C) was significantly related to the risk of stroke on
the third day after exposure (relative risk [RR]=1.017; 95% confidence interval [CI], 1.00%-1.035%).
Also, a low temperature of 7°C on 5-6 lag days was significantly associated with the risk of stroke. The
risk of stroke hospital admission was not significantly associated with low humidity. Humidity with a
low percentage (8%-9%) two days after exposure was significantly related to the risk of intracerebral
hemorrhage (RR=5.089; 95% CI, 1.002%-25.835% ) (RR=4.841; 95% CI, 1.014%-23.109%),
respectively.
Conclusion: The results show that hot and cold temperatures are associated with stroke admission,
and low humidity increases the risk of intracranial hemorrhage. This study suggests that changes in
meteorological variables can raise the risk of stroke and exacerbate the pathogenicity in vulnerable
people to these diseases.
blood pressure. In cold weather, blood viscosity increases, but increasing body temperature raises
coagulation factors. Also, plasma fibrinogen concentrations are higher in older patients. All of these
factors can contribute to the incidence of stroke.
Objectives: Our purpose was to assess the relationships between metrological factors and the rate
of stroke patients in the north of Iran.
Materials & Methods: We used a time-series analysis to investigate the association between
metrological factors and hospital admission of cerebrovascular events from 2014 to 2019 using
distributed lag nonlinear models.
Results: Hot temperature (≥34°C) was significantly associated with an increased risk of stroke
admission. In the general population, severe cold (≤0°C) was significantly related to the risk of stroke on
the third day after exposure (relative risk [RR]=1.017; 95% confidence interval [CI], 1.00%-1.035%).
Also, a low temperature of 7°C on 5-6 lag days was significantly associated with the risk of stroke. The
risk of stroke hospital admission was not significantly associated with low humidity. Humidity with a
low percentage (8%-9%) two days after exposure was significantly related to the risk of intracerebral
hemorrhage (RR=5.089; 95% CI, 1.002%-25.835% ) (RR=4.841; 95% CI, 1.014%-23.109%),
respectively.
Conclusion: The results show that hot and cold temperatures are associated with stroke admission,
and low humidity increases the risk of intracranial hemorrhage. This study suggests that changes in
meteorological variables can raise the risk of stroke and exacerbate the pathogenicity in vulnerable
people to these diseases.
Type of Study: Research |
Subject:
Special
Received: 2023/10/11 | Accepted: 2023/10/17 | Published: 2023/10/17
Received: 2023/10/11 | Accepted: 2023/10/17 | Published: 2023/10/17
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Articles Copyright © The Author(s).
Owned by Guilan University of Medical Sciences.
Co-published by Negah Institute for Scientific Communication.
Contact Information
Caspian Journal of Neurological Sciences
Guilan University of Medical Sciences
University Tel : +9813 3333 0939
E-mail: cjnsgums@gmail.com, cjns@gums.ac.ir
Owned by Guilan University of Medical Sciences.
Co-published by Negah Institute for Scientific Communication.
Contact Information
Caspian Journal of Neurological Sciences
Guilan University of Medical Sciences
University Tel : +9813 3333 0939
E-mail: cjnsgums@gmail.com, cjns@gums.ac.ir
