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【medical-news】女性异常的睡眠方式与中风有关
NEW YORK (Reuters Health) - Sleep patterns in middle-aged women can increase their risk for stroke, researchers in the United States have found. The greatest increase in stroke risk -- 70 percent -- was noted among women who slept 9 hours or more per night, according to their report in the medical journal Stroke.
A link between sleep duration and mortality has previously been noted in a number of studies, but evidence of an association between sleep patterns and cardiovascular disease has been lacking, Dr. Jiu-Chiuan Chen, from the University of North Carolina in Chapel Hill, and co-researchers note.
The current investigation included 93,175 women, between 50 and 79 years of age, who were enrolled in the Women's Health Initiative study.
Overall, 8.3 percent of these women reported than they normally slept no more than 5 hours per night, while 4.6 percent reported sleeping at least 9 hours per night.
After following the group for an average of 7.5 years, the researchers found that 1,166 women experienced an ischemic stroke, the most common type of stroke, which occurs when a blood vessel in the brain becomes blocked. This prevents oxygen from reaching the brain and the brain's tissue begins to die.
Upon further analysis, Chen's group found that women with a sleep duration of 6 hours or less, 8 hours, or 9 hours or more increased the risk of stroke by 14 percent, 24 percent, and 70 percent, respectively, compared with sleeping 7 hours.
The adverse effect of sleeping 6 hours or less was more pronounced in women who had cardiovascular disease at beginning of the study. In these subjects, this amount of sleep increased their risk of stroke by 22 percent.
Further analysis also suggested that the adverse effect of long periods of sleep was not associated with frequent snoring or sleepiness. Therefore, sleep patterns that are longer or shorter than the norm could be independent risk factors for stroke, the authors comment.
"The prevalence in women of having long sleep duration is much lower than having sleep duration less than 6 hours. So the overall public health impact of short sleep is probably longer than long sleep," Chen explained a statement.
Chen added: "Our data do not imply that if women with long sleep cut their sleep hours they would be at a lower risk....Further studies are needed to help us understand the possible mechanisms involved in the associations found in this study."
SOURCE: Stroke, July 27, 2008 rapid access.
http://www.reuters.com/article/healthNews/idUSCOL16773620080721 本人已认领该文编译，48小时后若未提交译文，请其他战友自由认领 Abnormal sleep patterns in women linked to stroke
女性异常的睡眠方式与中风有关
NEW YORK (Reuters Health) - Sleep patterns in middle-aged women can increase their risk for stroke, researchers in the United States have found. The greatest increase in stroke risk -- 70 percent -- was noted among women who slept 9 hours or more per night, according to their report in the medical journal Stroke.
NEW YORK (Reuters Health) –美国的研究者发现中年女性的睡眠方式增加了中风的危险。据美国中风杂志报告，每晚睡眠9个小时或更多时间的女性，70%的人中风危险增加很多。
A link between sleep duration and mortality has previously been noted in a number of studies, but evidence of an association between sleep patterns and cardiovascular disease has been lacking, Dr. Jiu-Chiuan Chen, from the University of North Carolina in Chapel Hill, and co-researchers note.
合作研究者，Dr. Jiu-Chiuan Chen, from the University of North Carolina in Chapel Hil说，一些研究已经注意到睡眠持续时间和死亡率的关系，但是还缺乏睡眠方式和心血管疾病之间相关联的证据。
The current investigation included 93,175 women, between 50 and 79 years of age, who were enrolled in the Women's Health Initiative study.
目前调查包括了年龄在50到79岁之间的93175名女性，她们参加了妇女健康倡议会议。
Overall, 8.3 percent of these women reported than they normally slept no more than 5 hours per night, while 4.6 percent reported sleeping at least 9 hours per night.
总体而言，这些人中8.3%女性的报告他们通常每晚睡眠不超过5小时，而有4.6%的人报告每晚睡眠至少9小时。
After following the group for an average of 7.5 years, the researchers found that 1,166 women experienced an ischemic stroke, the most common type of stroke, which occurs when a blood vessel in the brain becomes blocked. This prevents oxygen from reaching the brain and the brain's tissue begins to die.
对这些人群随访7.5年后，研究人员发现1166名女性得过缺血性中风，这是一种最常见的中风类型，当脑血管堵塞时就会发生。这就阻断了大脑氧的供应，造成脑组织死亡。
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作者:admin@医学,生命科学 2011-08-06 17:14
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