Health encyclopaedia - Alphabetical Topic List健康百科全书-按字母顺序排列的主题清单

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Fainting昏厥

Fainting can be caused by a variety of things.昏厥，可引起不同的东西。 It is related to your heart, circulation, blood pressure and breathing, but is triggered by different factors in different people.这是有关你的心，流通，血压及呼吸，但所引发的不同因素在不同的人。 More than one thing may be the cause of fainting and sometimes a specific cause cannot be found.以上一件事，可能是造成昏厥，有时一个具体的原因无法找到。

Stressful situations, pain and excitement can all cause fainting.没有压力的情况下，痛苦和兴奋都可以导致昏厥。 They cause feelings of strong emotion, distress or shock, which puts physical and mental strain on the body.他们的事业的感情，强烈的情绪，困扰或休克，这使身体和心理的应变对身体的。 Stressful situations may be anything from receiving an injection, to feeling panicky in a hot and overcrowded room.没有压力的情况下可能来自接受注射液，感觉恐慌，在炎热和拥挤的房间。 Fainting can also occur when you feel very nervous, or after witnessing a shocking or unexpected event.昏厥，也可能会出现当你觉得很紧张，或经过一个令人震惊的或突发事件。

Fainting occurs when there has been a fall in blood pressure, which reduces the amount of blood and oxygen flowing to the brain.昏厥发生时，有一个属于血液中的压力，从而降低了数额的血液和氧气流向大脑。 This is more common in people with low blood pressure, teenagers, and pregnant women.这是较为常见的在人与血压低，青少年和孕妇。 A faint is most likely to happen in a hot environment when blood vessels in the skin expand, reducing central blood pressure.一微弱的，是最有可能发生在一个炎热的环境时，血管在皮肤扩大，降低血液中环的压力。