Vasovagal syncope

Vasovagal syncope (pronounced: vay-zo-VAY-gul SING-kuh-pee) is a common type of fainting or syncope that can occur when the body overreacts to certain triggers, such as the sight of blood or extreme emotional distress. The name vasovagal syncope refers to the vasovagal reflex, which causes the heart rate and blood pressure to drop suddenly, leading to reduced blood flow to the brain.

Etymology

The term vasovagal syncope is derived from vaso, referring to the vasoconstriction and vasodilation of blood vessels, and vagal, referring to the vagus nerve, which helps to regulate heart rate. Syncope is a term used to describe fainting or a sudden loss of consciousness.

Symptoms

Symptoms of vasovagal syncope can include dizziness, nausea, blurred vision, and sweating. These symptoms can occur before a fainting episode. After fainting, an individual may feel confused or disoriented for a short time.

Causes

Vasovagal syncope can be triggered by various factors such as standing for long periods, heat exposure, the sight of blood, having blood drawn, fear of bodily injury, straining, such as to have a bowel movement, and sudden drops in blood pressure.

Treatment

Treatment for vasovagal syncope focuses on avoiding triggers, improving blood flow, and managing symptoms. This can include staying hydrated, avoiding standing for long periods, and using certain medications.

Related Terms

• Syncope
• Vagus nerve
• Vasoconstriction
• Vasodilation

External links

• Medical encyclopedia article on Vasovagal syncope
• Wikipedia's article - Vasovagal syncope

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