Seasonal variation of cerebrovascular diseases

Tsementzis, S A; Kennet, R. P.; Hitchcock, Edward; Gill, Jasvinder; Beevers, D.G.

doi:10.1007/bf01400492

Cited by 53 publications

(31 citation statements)

References 8 publications

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“…2,12,14,17,22,27,[29][30][31] The highest occurrences of SAH were found in spring in women and in late fall in men, 4) in spring and fall in men, and in winter in women, 24) and in winter in women and no peak in men. 32) Our data resembled the results of 10 years of the Canadian Collaborative Study Group although the lowest occurrence in their male group was in summer whereas that of in the present study was in winter. 24) This inconsistency and inconclusiveness can be explained by differences in study, hospital-based studies versus population-based studies, by differences in environmental conditions and lifestyle between the countries, 5) and by relatively small numbers of events available for analysis.…”

Section: Discussionsupporting

confidence: 71%

“…2,4,6,11,12,14,15,17,18,20,22,24,26,27,[29][30][31][32][33] Hospital-based and populationbased studies that demonstrated significant seasonal variation found that the peak period for SAH differed widely. [4][5][6]15,20,24,26,32,33) No statistically significant seasonal variations were also observed in some studies. 2,12,14,17,22,27,[29][30][31] The highest occurrences of SAH were found in spring in women and in late fall in men, 4) in spring and fall in men, and in winter in women, 24) and in winter in women and no peak in men.…”

Section: Discussionmentioning

confidence: 99%

“…8,13) However, investigation of the seasonal incidence of SAH has identified environmental and sociomedical factors correlated with aneurysm rupture. 2,4,6,11,12,14,15,17,18,20,22,24,26,27,[29][30][31][32][33] The present study investigated the relationship between sex and seasonal occurrence of SAH.…”

Section: Introductionmentioning

confidence: 99%

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Involvement of Meteorological Factors and Sex in the Occurrence of Subarachnoid Hemorrhage in Japan

Umemura

Hirashima

Kurimoto

et al. 2008

Neurol. Med. Chir.(Tokyo)

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The sex difference in the seasonal occurrence of subarachnoid hemorrhage (SAH) and the association of meteorological factors in Japan were analyzed in 1006 consecutive patients with SAH in Toyama, Japan from 1996 to 2000. The study investigated whether these meteorological factors could explain the seasonality of the incidence of SAH in each sex. Seasonal variation of SAH occurrence peaked in spring in men, but peaked in spring and winter in women. The difference between maximum temperature and minimum temperature was the greatest on the day previous to SAH occurrence in multiple individuals in men, whereas mean humidity was the greatest on that day in women. Interestingly, the difference between maximum temperature and minimum temperature peaked in spring and mean humidity in winter from the meteorological data over the 5 years. The relationship between humidity and occurrence of SAH may explain the sex difference of the incidence of aneurysmal SAH. The humidity change may be a specific and additional meteorological factor for the incidence of SAH in women.

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Section: Discussionsupporting

confidence: 71%

Section: Discussionmentioning

confidence: 99%

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Involvement of Meteorological Factors and Sex in the Occurrence of Subarachnoid Hemorrhage in Japan

Umemura

Hirashima

Kurimoto

et al. 2008

Neurol. Med. Chir.(Tokyo)

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“…A previous multivariate analysis of various climate factors found that shorter sunshine duration was significantly associated with occurrence of SAH and showed the lowest p value. 13) Although we did not perform multivariate analysis due to the strong mutual association of many climate factors, 26) the amount of global solar radiation was smaller on the onset days with the lowest p value in our study as well (Table 4).…”

Section: Discussionmentioning

confidence: 65%

“…Seasonal variation and meteorological association of stroke has long been controversial, but only a small number of studies have focused specifically on SAH, so whether such epidemiological phenomena exist has not been determined. Statistically significant seasonal or circannual cyclic trends have been reported [2][3][4]7,12,13,19,26,27) and some meteorological factors were significantly associated with the occurrence of SAH. 2,4,7,13,15) However, other studies have not found significant seasonal variation or meteorological association.…”

Section: Introductionmentioning

confidence: 99%

Differential Effects of Activity and Climate on Onset of Subarachnoid Hemorrhage.

Kawai

Nonaka

Suzuki

et al. 2001

Neurol. Med. Chir.(Tokyo)

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Conflicting findings of the effect of climate on onset of subarachnoid hemorrhage (SAH) may result from the influence of strenuous activities which can trigger aneurysmal rupture independent of climatological factors. The effect of climate and patient activities on onset of SAH were analyzed. The clinical records of 786 consecutive patients with aneurysmal SAH admitted to our hospital for 10 years were reviewed. Activities at onset were categorized according to the intensity of strain at onset. Seasonal variation, circannual cyclic trend, and association with 90 meteorological factors were examined in each category and the results were compared between categories. Bimonthly occurrence in the light strain group showed a significant seasonal variation and cyclic trend with two peaks in early spring and fall, whereas no significant trend was detected in the overall patients and in the heavy strain group. The significant meteorological factors were global solar radiation, sunshine hours, changes in mean and minimum temperature and mean vapor pressure from the previous day, and minimum pressure in the previous 7 days. Lower global solar radiation in the light strain group was associated with onset with the lowest p value (p ＝ 0.0046). No factors were significant in the heavy strain group. There is some evidence of the possible influence of climatological factors on onset of SAH without strenuous activity. Strenuous activity seems to affect onset more strongly, which masks any effect of climate.

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Christmas, acute ischemic stroke and stroke‐related mortality in Hungary

et al. 2021

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Objectives Risk factors for stroke include psychological effects, such as depression. Festive occasions (such as Christmas in Hungary) may carry a significant emotional impact and may therefore contribute to increased cardiovascular risk. Thrombolytic treatment of acute ischemic stroke has a narrow time window and allows for the precise assessment of stroke incidence. Materials & Methods We analyzed anonymized national data of the number of thrombolytic treatments for acute ischemic stroke and the number of stroke‐related deaths between 1 January 2007 and 31 December 2016 in Hungary within 2‐day, 5‐day, and 1‐month periods preceding and following 24 December each year. Analysis of subgroups based on age (below and over 65 years) and sex was also performed. Results The number of thrombolytic treatments was higher in all three periods preceding Christmas compared to the corresponding period that follows the feast. This increase was particularly prominent in men below 65 years of age. While overall stroke‐associated mortality was increased 1 month after Christmas, the death rate was higher a month before rather than after Christmas in men below 65 years of age and in women both below and over 65 years of age 5 days before Christmas. Conclusions These findings may predominantly relate to emotional and psychological factors. In case of women, the anxiety secondary to festive preparations, while in men below 65 years, the increased psychological stress of providing financial security for the celebration may play an important role.

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Seasonal variation of cerebrovascular diseases

Cited by 53 publications

References 8 publications

Involvement of Meteorological Factors and Sex in the Occurrence of Subarachnoid Hemorrhage in Japan

Involvement of Meteorological Factors and Sex in the Occurrence of Subarachnoid Hemorrhage in Japan

Differential Effects of Activity and Climate on Onset of Subarachnoid Hemorrhage.

Christmas, acute ischemic stroke and stroke‐related mortality in Hungary

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