Intracerebral Hemorrhage and Meteorological Factors in Chongqing, in the Southwest of China

Li, Xin; Zhang, Junyi; Qin, Xinyue

doi:10.1007/978-3-7091-0693-8_53

Cited by 10 publications

(8 citation statements)

References 40 publications

(14 reference statements)

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“…Other major causes of ICH were thrombopenia, leukemia, and cerebrovascular malformations, especially in patients <30 years of age. Li et al (2011) reported that the incidence of ICH throughout the year was closely related to meteorological factors such as season, daily air temperature, humidity, and atmospheric pressure. We found that the incidence of ICH was highest in winter and lowest in summer, consistent with their results, although the differences did not reach statistical significance in our study.…”

Section: Discussionmentioning

confidence: 99%

Epidemiological and clinical characteristics of 266 cases of intracerebral hemorrhage in Hangzhou, China

Wang

Luo

2013

J. Zhejiang Univ. Sci. B

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Ethnicity and socioeconomic factors can influence disease susceptibility, clinical presentation, and outcome. We investigated the clinical characteristics (age, sex, seasonal variation, lesion site, symptoms, complications, prognosis, and sequelae) and risk factors for intracerebral hemorrhage (ICH) in 266 cases treated at our hospital in Hangzhou City, China, from January 2011 to December 2011. Risk of ICH increased dramatically with age; only 4.3% of cases were <30 years old, while 44.4% were >60 years of age. Men outnumbered women by 2:1 (67.3% vs. 32.7%). Single hemorrhage was most often located in the cerebral lobes (37.2% of cases), basal ganglia (34.2%), thalamus (8.3%), cerebellum (6.8%), ventricle (1.5%), and brainstem (1.1%), while 10.9% of cases exhibited hemorrhages at multiple sites. Hypertension was also a major risk factor for ICH, as 47% of all patients were hypertensive and the percentage increased with age. In hypertensive patients, the most common hemorrhage site was the basal ganglia and ICH was often associated with thrombopenia. In patients with leukemia (all forms), most hemorrhages were lobar. Warfarin- and encephalic operation-associated ICHs were all lobar. Headache was the major symptom of occipital, temporal, and frontal lobe hemorrhage. Dizziness, nausea, and vomiting were the major symptoms of cerebellum hemorrhage. Limb dysfunction was the major symptom of thalamic and basal ganglia hemorrhage. Disturbed level of consciousness was the major symptom in multisite, ventricular, parietal lobe, and brainstem hemorrhage. Hyperspasmia occurred most often in lobar hemorrhage and blurred vision in occipital lobe hemorrhage. Hospital mortality was 24.4% (n=65) with a mean delay from presentation to death of (10.5±18.5) d. The majority of fatalities were cerebral hernia cases (58.5%) and these patients also had the shortest time to death [(2.9±3.5) d]. Mortality was 100% in brainstem ICH and hemorrhagic conversion of cerebral infarct. Thrombopenia-associated ICH also had a high mortality rate (81.0%), while patients with cerebrovascular malformations and cerebral aneurysms demonstrated a much better prognosis (46.2% recovery).

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Section: Discussionmentioning

confidence: 99%

Epidemiological and clinical characteristics of 266 cases of intracerebral hemorrhage in Hangzhou, China

Wang

Luo

2013

J. Zhejiang Univ. Sci. B

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“…TEM is a noticed meteorological parameter affecting ICH occurrence. Most studies from different climate types show that TEM negatively correlates with ICH risk, 8 , 9 , 14 , 16 , 21–25 although a few studies suggest that TEM is not a risk factor. 11–13 In the present research, we found daily mean TEM and day-to-day variation of TEM influenced the risk of ICH meaningfully in the single-factor model.…”

Section: Discussionmentioning

confidence: 99%

“…6,7 Many researchers indicate that changes in meteorological parameters, including temperature (TEM), atmospheric pressure (PRE), and relative humidity (RHU), are significantly related to the risk of ICH. [8][9][10] However, some scholars have opposite opinions on these views. [11][12][13] Moreover, the influence type of meteorological parameters on ICH occurrence is controversial.…”

Section: Introductionmentioning

confidence: 99%

“…[11][12][13][21][22][23][24] However, an investigation from Chongqing, a southwest city in China, reveals that RHU is negatively correlated with the risk of ICH when RHU is greater than 75%. 8 But the author did not analyze the underlying causes of this phenomenon. Interestingly, our study found that daily SSD in lag2 had a positive influence on the risk of ICH onset.…”

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confidence: 99%

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Daily Meteorological Parameters Influence the Risk of Intracerebral Hemorrhage in a Subtropical Monsoon Basin Climate

Wang¹,

Cheng²,

Song³

et al. 2021

RMHP

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Background and Purpose:The correlation between meteorological parameters and intracerebral hemorrhage (ICH) occurrence is controversial. Our research explored the effect of daily meteorological parameters on ICH risk in a subtropical monsoon basin climate. Methods: We retrospectively analyzed patients with ICH in a teaching hospital. Daily meteorological parameters including temperature (TEM), atmospheric pressure (PRE), relative humidity (RHU), and sunshine duration (SSD) were collected, with the diurnal variation (daily maximum minus minimum) and day-to-day variation (average of the day minus the previous day) calculated to represent their fluctuation. We adopted a time-stratified casecrossover approach and selected conditional logistic regression to explore the effect of meteorological parameters on ICH risk. The influence of monthly mean temperature proceeded via stratified analysis. Air pollutants were gathered as covariates. Results: Our study included 1052 eligible cases with ICH. In a single-factor model, the risk of ICH decreased by 5.9% (P<0.001) for each 1°C higher of the daily mean TEM, and the risk increased by 2.4% (P=0.002) for each 1hPa higher of the daily mean PRE. Prolongation of daily SSD inhibited the risk of ICH, and OR was 0.959 (P=0.007). The risk was raised by 7.5% (P=0.0496) with a 1°C increment of day-to-day variation of TEM. In a two-factor model, the effect of daily mean TEM or daily SSD on ICH risk was still statistically significant after adjusting another factor. The influence of meteorological parameters on ICH risk continued in cold months but disappeared in warm months after stratified analysis. Conclusion: This research indicates daily TEM and SSD had an inverse correlation to ICH risk in a subtropical monsoon basin climate. They were independent when adjusted by another factor. Daily PRE and day-to-day TEM variation were positively related to ICH risk. The correlation of daily meteorological factors on ICH risk was affected by the monthly thermal background.

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“…Odds ratios for the association of SAH risk and an interquartile range 24 h change in ambient temperature of 2.9 °C, relative air humidity of 10.5% and atmospheric pressure of 6.2 hPa for lag times of 1, 2, and 3 days before onset of SAH symptoms in the overall population and subgroups. Bars indicate 95% confidence interval, filled squares mark odds ratios with confidence intervals not including 1.00 different geographical regions [28,[37][38][39][40][41][42][43][44][45]. However, others found an increased SAH risk associated with falling atmospheric pressure [46] or no such association [32,47,48] or no association with SAH risk and weather fronts [49].…”

Section: Discussionmentioning

confidence: 99%

Weather conditions associated with subarachnoid hemorrhage: a multicenter case-crossover study

et al. 2021

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Background Most spontaneous subarachnoid hemorrhages (SAH) occur unexpectedly and independently of classical risk factors. In the light of increasing climate variability and change, we investigated weather and rapid weather changes as possible short-term risk factors for SAH. Methods Seven hundred ninety one patients admitted to three major hospitals in Germany for non-traumatic SAH with a determinable onset of SAH symptoms were included in this hospital-based, case-crossover study. The effects of atmospheric pressure, relative air humidity, and ambient temperature and their 24 h changes on the onset of SAH under temperate climate conditions were estimated. Results There was no association between the risk of SAH and 24 h weather changes, mean daily temperature or mean relative air humidity in the overall population. For every 11.5 hPa higher mean daily atmospheric pressure, the risk of SAH increased by 15% (OR 1.15, 95% confidence interval (CI) 1.01–1.30) in the entire study population with a lag time of three days. Conclusion Our results suggest no relevant association between 24 h-weather changes or absolute values of ambient temperature and relative humidity and the risk of SAH. The medical significance of the statistically weak increase in SAH risk three days after exposure to high atmospheric pressure is unclear. However, as the occurrence of stable high-pressure systems will increase with global warming and potentially affect SAH risk, we call for confirming studies in different geographical regions to verify our observations.

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Intracerebral Hemorrhage and Meteorological Factors in Chongqing, in the Southwest of China

Cited by 10 publications

References 40 publications

Epidemiological and clinical characteristics of 266 cases of intracerebral hemorrhage in Hangzhou, China

Epidemiological and clinical characteristics of 266 cases of intracerebral hemorrhage in Hangzhou, China

Daily Meteorological Parameters Influence the Risk of Intracerebral Hemorrhage in a Subtropical Monsoon Basin Climate

Weather conditions associated with subarachnoid hemorrhage: a multicenter case-crossover study

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