College of Medicine and Veterinary Medicine, University of Edinburgh, The Chancellor's Building, Edinburgh, UK.
Eur J Emerg Med. 2010 Aug;17(4):240-2. doi: 10.1097/MEJ.0b013e328331ddf9.
The objective of this study was to assess whether the number of syncope attendances to the Emergency Department is related to daily temperature and humidity, or time of the day, day of the week, month or season of the year. All adult patients presenting with syncope over a 1-year period between 1 March 2007 and 29 February 2008 were enrolled. A circadian pattern of syncope attendances exists, peak attendance was between 10 : 00 and 16 : 00 h, especially in those aged above 65 years (P<0.001). There was no obvious relationship between attendances and mean daily temperature (r=0.16) and attendances and mean daily humidity (r=-0.14). There were 11% more attendances between December and May than between June and October (P=0.8, NS, chi). In conclusion, there is a circadian pattern of syncope attendances to the Emergency Department. The peak time for presentations is between 10 : 00 and 16 : 00 h. A trend was found towards more attendances between December and May. One hypothesis for this is differences between indoor and outdoor temperatures. Public health campaigns could be targeted towards elderly patients to ensure that they are aware of the increased risk of syncope on waking and also on transferring from cold to warm environments.
本研究旨在评估急诊室因晕厥就诊的次数是否与每日温度和湿度、一天中的时间、一周中的天数、一个月或一年中的季节有关。2007 年 3 月 1 日至 2008 年 2 月 29 日期间，所有成年晕厥患者均被纳入研究。晕厥就诊存在昼夜节律模式，就诊高峰时间在 10:00 至 16:00 之间，尤其是年龄在 65 岁以上的患者（P<0.001）。就诊次数与每日平均温度（r=0.16）和每日平均湿度（r=-0.14）之间无明显关系。12 月至 5 月的就诊次数比 6 月至 10 月多 11%（P=0.8，NS，卡方）。结论：急诊室晕厥就诊存在昼夜节律模式。就诊高峰期在 10:00 至 16:00 之间。12 月至 5 月就诊次数有增加的趋势。对此的一种假设是室内外温度的差异。公共卫生宣传活动可以针对老年患者，以确保他们意识到醒来时和从寒冷环境转移到温暖环境时晕厥风险增加。
