Climatic and Seasonal Circumstances of Hypertensive Intracerebral Hemorrhage in a Worldwide Cohort

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Abstract

Background and Purpose—

Numerous studies have investigated the influence of meteorologic factors and seasons on the incidence of spontaneous intracerebral hemorrhage (ICH) with ambiguous results. In the present study, data from a large, international multicenter trial in patients with ICH were used to identify seasonal and meteorologic determinants for hypertensive-ICH with greater applicability.

Methods—

Patients were grouped according to the presumptive ICH cause, that is, hypertensive when located in the basal ganglia brain stem as well as cerebellum and nonhypertensive when located lobar. Both groups were compared with regard to air temperature and air pressure and their occurrence during the year. A regression analysis was performed to identify independent predictors of hypertensive-ICH.

Results—

Only hypertensive-ICH showed a seasonal pattern and occurred with higher air pressure values and at younger age. Independent predictors of hypertensive-ICH were increased air pressure on the actual day of the event and younger age as well as higher temperature.

Conclusions—

In the present study with an international cohort, besides age air pressure, more than temperature, had an influence on the occurrence of hypertensive-ICH, only.

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