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Symptoms of Fainting症状昏厥

A faint is characterised by suddenly feeling weak and unsteady, before passing out for a short period of time, usually just for a few seconds.一微弱的特点是，突然感觉软弱，松松垮垮，前结业，为很短的时间内，通常只为几秒钟。 It can happen when you are sitting down, standing up, or when you get up too quickly, and is caused by a momentary shortage of oxygen to the brain.它可以发生，当你坐下来，站起来，或当您起床太快，是所造成的一时短缺的氧到脑部。 Fainting is your body’s way of getting you to lie down, so that oxygen-carrying blood can quickly get back to your brain.昏厥是您的bodyâ € ™ s的方式获得你躺下，使氧进行血液可以快速回到你的大脑。

Just before you lose consciousness, you may experience the following symptoms:刚才在您失去意识，你可能会遇到以下症状：

  • yawning;打哈欠;
  • a sudden clammy sweat;突然clammy汗水;
  • nausea;恶心;
  • fast, deep breathing;快速，深呼吸;
  • confusion;混乱;
  • blurred vision or ‘spots’ in front of the eyes; and视力模糊或â € 〜 spotsâ € ™在前面的眼睛;
  • ringing in the ears.响在耳。

This is followed by loss of strength and loss of consciousness.这是其次的损失实力和意识丧失。 It takes only a few seconds for this sequence to run, and there may be very little warning before a person collapses.它只需几秒钟这个序列来说，可能有很少的警告之前，一个人坍塌。

By collapsing to the ground, your head and heart are on the same level.由崩溃到地面，头部和心脏都在同一水平。 This means your heart does not have to work as hard to push blood up to the brain, and you should return to consciousness after a few seconds.这意味着你的心没有工作，努力推动血液到大脑，你要回到意识几秒钟后。 It is common to feel confused and weak for 20–30 minutes after fainting.这是共同的感觉混乱和薄弱20â € “ 30分钟后昏厥。

If you already feel unwell, you may be more likely to faint.如果您已经感到不适，您可能会更容易晕倒。 People who are otherwise healthy can also faint suddenly and unexpectedly.谁是人民的健康，否则也可以隐约突然和意外。