Relationship of Meteorological Variable and Cerebrovascular Events: An Ecological Time Series Study
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 f...
| Main Authors: | , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Guilan University of Medical Sciences
2023-10-01
|
| Series: | Caspian Journal of Neurological Sciences |
| Subjects: | |
| Online Access: | http://cjns.gums.ac.ir/article-1-669-en.pdf |
| _version_ | 1797336209429626880 |
|---|---|
| author | Ghazal Saraei Parisa Mehraeen Mostafa Soodmand Sara Khoshamuoz Seyed Ali Majidi Ali Ghanbari Shadi Qatran Mohammad Taghi Moghadamnia |
| author_facet | Ghazal Saraei Parisa Mehraeen Mostafa Soodmand Sara Khoshamuoz Seyed Ali Majidi Ali Ghanbari Shadi Qatran Mohammad Taghi Moghadamnia |
| author_sort | Ghazal Saraei |
| collection | DOAJ |
| description | 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. |
| first_indexed | 2024-03-08T08:50:56Z |
| format | Article |
| id | doaj.art-062752668d6544d59e36d313509e2957 |
| institution | Directory Open Access Journal |
| issn | 2423-4818 |
| language | English |
| last_indexed | 2024-03-08T08:50:56Z |
| publishDate | 2023-10-01 |
| publisher | Guilan University of Medical Sciences |
| record_format | Article |
| series | Caspian Journal of Neurological Sciences |
| spelling | doaj.art-062752668d6544d59e36d313509e29572024-02-01T09:30:56ZengGuilan University of Medical SciencesCaspian Journal of Neurological Sciences2423-48182023-10-0194268277Relationship of Meteorological Variable and Cerebrovascular Events: An Ecological Time Series StudyGhazal Saraei0Parisa Mehraeen1Mostafa Soodmand2Sara Khoshamuoz3Seyed Ali Majidi4Ali Ghanbari5Shadi Qatran6Mohammad Taghi Moghadamnia7 Research and Technology Deputy, Guilan University of Medical Sciences, Rasht, Iran Department of Medical-Surgical Nursing, School of Nursing and Midwifery, Guilan University of Medical Sciences, Rasht, Iran Department of Medical-Surgical Nursing, School of Nursing and Midwifery, Guilan University of Medical Sciences, Rasht, Iran Department of Medical-Surgical Nursing, School of Nursing and Midwifery, Guilan University of Medical Sciences, Rasht, Iran Department of Nursing & Midwifery, Rasht Branch, Islamic Azad University, Rasht, Iran Department of Epidemiology and Biostatistics, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran Department of Medical-Surgical Nursing, School of Nursing and Midwifery, Guilan University of Medical Sciences, Rasht, Iran Department of Medical-Surgical Nursing, School of Nursing and Midwifery, Guilan University of Medical Sciences, Rasht, Iran 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.http://cjns.gums.ac.ir/article-1-669-en.pdfclimate changestrokecerebrovascular disorders |
| spellingShingle | Ghazal Saraei Parisa Mehraeen Mostafa Soodmand Sara Khoshamuoz Seyed Ali Majidi Ali Ghanbari Shadi Qatran Mohammad Taghi Moghadamnia Relationship of Meteorological Variable and Cerebrovascular Events: An Ecological Time Series Study Caspian Journal of Neurological Sciences climate change stroke cerebrovascular disorders |
| title | Relationship of Meteorological Variable and Cerebrovascular Events: An Ecological Time Series Study |
| title_full | Relationship of Meteorological Variable and Cerebrovascular Events: An Ecological Time Series Study |
| title_fullStr | Relationship of Meteorological Variable and Cerebrovascular Events: An Ecological Time Series Study |
| title_full_unstemmed | Relationship of Meteorological Variable and Cerebrovascular Events: An Ecological Time Series Study |
| title_short | Relationship of Meteorological Variable and Cerebrovascular Events: An Ecological Time Series Study |
| title_sort | relationship of meteorological variable and cerebrovascular events an ecological time series study |
| topic | climate change stroke cerebrovascular disorders |
| url | http://cjns.gums.ac.ir/article-1-669-en.pdf |
| work_keys_str_mv | AT ghazalsaraei relationshipofmeteorologicalvariableandcerebrovasculareventsanecologicaltimeseriesstudy AT parisamehraeen relationshipofmeteorologicalvariableandcerebrovasculareventsanecologicaltimeseriesstudy AT mostafasoodmand relationshipofmeteorologicalvariableandcerebrovasculareventsanecologicaltimeseriesstudy AT sarakhoshamuoz relationshipofmeteorologicalvariableandcerebrovasculareventsanecologicaltimeseriesstudy AT seyedalimajidi relationshipofmeteorologicalvariableandcerebrovasculareventsanecologicaltimeseriesstudy AT alighanbari relationshipofmeteorologicalvariableandcerebrovasculareventsanecologicaltimeseriesstudy AT shadiqatran relationshipofmeteorologicalvariableandcerebrovasculareventsanecologicaltimeseriesstudy AT mohammadtaghimoghadamnia relationshipofmeteorologicalvariableandcerebrovasculareventsanecologicaltimeseriesstudy |