Vasovagal Syncope - Symptoms, Causes, and Treatment

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Vasovagal Syncope - Symptoms, Causes, and
Treatment

• - Specialty Care Clinics

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What is Vasovagal Syncope?

• Vasovagal syncope happens when you faint because
  your body overreacts to specific triggers, like
  the sight of blood or extreme emotional distress.
  It might also be called neurocardiogenic syncope.
• The vasovagal syncope trigger causes your heart
  rate and blood pressure to drop unexpectedly.
  That leads to decreased blood flow to your brain,
  causing you to briefly lose consciousness.
• Vasovagal syncope is generally harmless and needs
  no treatment. But it is possible that you might
  injure yourself during a vasovagal syncope
  episode. Your doctor might recommend tests to
  rule out more-severe causes of fainting, like
  heart disorders.

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Symptoms Of Vasovagal Syncop

• Before you faint because of vasovagal syncope,
  you might experience some of the following
• Pale skin
• Light-headedness
• Tunnel vision your field of vision decreases so
  that you see only what's in front of you
• Nausea
• Feeling warm
• A cold, clammy sweat
• Blurred vision
• During a vasovagal syncope episode, bystanders
  might notice
• Jerky, abnormal movements
• A slow, weak pulse
• Dilated pupils

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Causes Of Vasovagal Syncope

• Vasovagal syncope happens when the part of your
  nervous system that regulates heart rate and
  blood pressure malfunctions in response to a
  trigger, like the sight of blood.
• Your heart rate slows down, and the blood vessels
  in your legs widen (dilate). This enables blood
  to pool in your legs, which lowers your blood
  pressure. Combined, the drop in blood pressure
  and slowed heart rate quickly decrease blood flow
  to your brain, and you faint.
• Sometimes there is no classical vasovagal syncope
  trigger, but common triggers are
• Standing for long periods of time
• Heat exposure
• Seeing blood
• Having blood drawn
• Fear of bodily injury
• Straining, like having a bowel movement
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