气压变化时自发性蛛网膜下腔出血的发生率。
The incidence of spontaneous subarachnoid hemorrhage with change in barometric pressure.
作者信息
Jehle D, Moscati R, Frye J, Reich N
机构信息
Department of Emergency Medicine, School of Medicine and Biomedical Sciences, Erie County Medical Center, State University of New York at Buffalo.
出版信息
Am J Emerg Med. 1994 Jan;12(1):90-1. doi: 10.1016/0735-6757(94)90209-7.
The authors' observation of an apparent increased incidence of patients presenting with spontaneous subarachnoid hemorrhage (SAH) during stormy weather prompted them to retrospectively review admissions data during an 18-month period to look for an association between SAH and changes in barometric pressure (BMP). Of the 39,049 cases examined, 76 had confirmed SAH. Continuous graphs of BMP were used to categorize days as being "flat" days (change in BMP < or = 0.15; dpHg) or "change" days (change in BMP > 0.15; dpHg). Days on which patients presented with SAH were significantly correlated with change days (P < .004). There was significantly more SAH during the winter months (October to March), than during the remaining summer months (P < .02). The correlation of SAH with change in BMP did not hold if these summer months were examined alone. The risk ratio of having an SAH on an inclement day during the winter months was 1.99 (95% confidence interval, 1.11 to 3.60). The reason for this association is not clear at this time.
作者观察到，在恶劣天气期间，自发性蛛网膜下腔出血（SAH）患者的发病率明显增加，这促使他们回顾性分析了18个月期间的入院数据，以寻找SAH与气压变化（BMP）之间的关联。在检查的39049例病例中，76例确诊为SAH。利用BMP的连续图表将日子分为“平稳”日（BMP变化≤0.15；单位：dpHg）或“变化”日（BMP变化＞0.15；单位：dpHg）。SAH患者出现症状的日子与“变化”日显著相关（P＜0.004）。冬季月份（10月至3月）的SAH明显多于其余夏季月份（P＜0.02）。如果单独检查夏季月份，SAH与BMP变化之间的相关性不成立。冬季恶劣天气时发生SAH的风险比为1.99（95%置信区间，1.11至3.60）。目前尚不清楚这种关联的原因。
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