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发表于 2010-10-25 18:18:05
本帖最后由 心物和 于 2010-10-25 18:36 编辑 |
什么是睡眠呼吸暂停症 （sleep apnoea）？
Sleep apnea (or sleep apnoea in British English) is a sleep disorder characterized by abnormal pauses in breathing or instances of abnormally low breathing, during sleep. Each pause in breathing, called an apnea, can last from a few seconds to minutes, and may occur 5 to 30 times or more an hour. Similarly, each abnormally low breathing event is called a hypopnea.
There are three forms of sleep apnea: central (CSA), obstructive (OSA), and complex or mixed sleep apnea (i.e., a combination of central and obstructive) constituting 0.4%, 84% and 15% of cases respectively.In CSA, breathing is interrupted by a lack of respiratory effort; in OSA, breathing is interrupted by a physical block to airflow despite respiratory effort and snoring is common.
Regardless of type, an individual with sleep apnea is rarely aware of having difficulty breathing, even upon awakening.Sleep apnea is recognized as a problem by others witnessing the individual during episodes or is suspected because of its effects on the body (sequelae). Symptoms may be present for years (or even decades) without identification, during which time the sufferer may become conditioned to the daytime sleepiness and fatigue associated with significant levels of sleep disturbance.
Untreated, sleep apnoea is associated with an increased risk of traffic accidents, as well as stroke and heart disease, for example. Moderate and severe sleep apnoea also increases the risk of premature death.
睡觉时戴持续正压通气口罩 Symptom alleviation treatment through CPAP -- continuous positive airway pressure -- which produces more normal breathing patterns during sleep.
实验方法 To achieve significant weight loss, the treatment group were put on a very low calorie diet (VLCD), which gave them an initial energy input of 554 kcal per day for seven weeks followed by a fortnight's successive increase up to 1,500 kcal per day at week nine. The control group maintained their normal dietary habits during the nine week study period, but was afterwards offered a VLCD programme.
实验结果 The results of the study show that the weight loss group lost 19 kilos on average after nine weeks and more than halved the number of apnoea events. None of the treated patients had severe sleep apnoea, half had only mild sleep apnoea and one in six could be declared healthy. The researchers also noted that the effect of the weight loss programme was greatest in patients with severe sleep apnoea.
资料来源："Weight-Loss Proves Effective Cure for Sleep Apnea". ScienceDaily. <http://www.sciencedaily.com/releases/2009/12/091203222145.htm> .Dec. 7, 2009.
Karolinska Institutet (2009, December 7). Weight-loss proves effective cure for sleep apnea. ScienceDaily. Retrieved October 25, 2010, from <http://www.sciencedaily.com- /releases/2009/12/091203222145.htm>.
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