What causes vasovagal syncope?

Vasovagal syncope is caused by a sudden drop in blood pressure, often triggered by a reaction to something. This causes your heart to slow down for a short time. As a result, your brain may not get enough oxygen-rich blood, which causes you to pass out. Vasovagal syncope is typically not a serious health condition.

What is a cardiovascular syncope?

Cardiac syncope is a transient loss of consciousness due to a defect, either structural or electrical, which prevents the generation of enough cardiac output to perfuse the brain adequately.

Is vasovagal syncope a heart condition?

Vasovagal syndrome is a heart condition that can cause a sudden, rapid drop in heart rate and blood pressure, which leads to fainting. The condition may also be described as a vasovagal or neurocardiogenic syncope, or vasovagal attack.

Is vasovagal syncope anxiety?

For example, the sight of blood, or extreme excitement, anxiety or fear, may cause some people to faint. This condition is called vasovagal syncope. Vasovagal syncope happens when the part of your nervous system that controls your heart rate and blood pressure overreacts to an emotional trigger.

Can I drive if I have vasovagal syncope?

Based on study findings, authors conclude that patients with frequent fainting episodes are safe to drive with minimal restrictions. In fact, estimated risk of car accidents is even lower in patients with vasovagal syncope than the general population.

What is syncope?

What is syncope? Syncope (pronounced “sin ko pea”) is the medical term for fainting or passing out. It is caused by a temporary drop in the amount of blood that flows to the brain. Syncope can happen if you have a sudden drop in blood pressure, a drop in heart rate, or changes in the amount of blood in areas of your body.

What are the warning signs of syncope?

People who experience the warning signs of fainting of dizziness, nausea and sweaty palms should sit or lie down. Anyone with syncope should receive an initial evaluation, including detailed physical and history examinations and measurement of blood pressure and heart rate, by a physician.

What triggers syncope?

Vasovagal syncope is often triggered by a combination of dehydration and upright posture. But it can also have an emotional trigger such as seeing blood (“fainting at the sight of blood”). Getting an injection or having blood drawn (not considered serious) Situational syncope, a sudden reflex response to a trigger other than those listed above.

What are the prognoses of patients with presyncope?

Patients with presyncope have similar prognoses to those with syncope and should undergo a similar evaluation. A standardized approach to syncope evaluation reduces hospital admissions and medical costs, and increases diagnostic accuracy.

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