Baño-Ruiz E, Abarca-Olivas J, Duart-Clemente J M, Ballenilla-Marco F, García P, Botella-Asunción C
Servicio de Neurocirugía, Hospital General Universitario de Alicante.
Neurocirugia (Astur). 2010 Feb;21(1):14-21.
Spontaneous subarachnoid hemorrhage is a pathology usually related to risk factors, such as arterial hypertension and/or nicotine poisoning. Nevertheless, other variables exist, like meteorological changes, that although the experience aims as possible responsible for an increase of the incidence, are still not established like such.
It is to investigate the influence of the meteorological changes, either seasonal variations or changes of atmospheric pressure, in the incidence of the subarachnoid hemorrhage.
All the cases of spontaneous subarachnoid hemorrhage are considered from the 1st of January from 1997 to the 31st of March of 2008, making a medical registry of demographic aspects (age, sex) and antecedents (arterial hypertension, diabetes mellitus, cerebral ischemia, nicotine poisoning), as well as numbers of atmospheric pressure (in hectopascales, hPa), daily temperature and relative humidity, throughout this period, with a calculation of the maximum, average and minimum values, as well as pressure differentials between consecutive days.
The analysis of the 173 gathered cases showed a predominance of the subarachnoid hemorrhage in female, specially the aneurismal ones, being arterial hypertension, the main factor of related risk. Significant differences between the days with and without hemorrhage were not demonstrated, in relation to the variation of atmospheric pressure (p 0.463), pressure temperature (p 0.381) and relative humidity (p 0.595) throughout the day.
In our element, the variations of atmospheric pressure are not related to an increase of incidence of the subarachnoid hemorrhage. Instead of this, cases of subarachnoid hemorrhage take place with changes of hardly 1.7 (1-3) hPa in the day, without observing a clear seasonal tendency.
自发性蛛网膜下腔出血是一种通常与危险因素相关的病理状况，如动脉高血压和/或尼古丁中毒。然而，还存在其他变量，如气象变化，尽管有研究旨在探讨其是否可能导致发病率上升，但目前仍未确定其与发病率之间的关系。
研究气象变化，即季节变化或大气压力变化，对蛛网膜下腔出血发病率的影响。
考虑1997年1月1日至2008年3月31日期间所有自发性蛛网膜下腔出血病例，对人口统计学方面（年龄、性别）和既往史（动脉高血压、糖尿病、脑缺血、尼古丁中毒）进行医学登记，并记录整个期间的大气压力（以百帕为单位，hPa）、每日温度和相对湿度，计算最大值、平均值和最小值，以及连续两天之间的压力差。
对收集到的173例病例的分析显示，蛛网膜下腔出血在女性中占主导，尤其是动脉瘤性出血，动脉高血压是主要的相关危险因素。在有出血和无出血的日子之间，就全天的大气压力变化（p = 0.463）、压力温度（p = 0.381）和相对湿度（p = 0.595）而言，未显示出显著差异。
在我们的研究中，大气压力变化与蛛网膜下腔出血发病率的增加无关。相反，蛛网膜下腔出血病例发生时，一天内压力变化幅度仅为1.7（1 - 3）hPa左右，未观察到明显的季节性趋势。
