Vasovagal syncope
Vasovagal syncope (also known as cardioneurogenic syncope or neurocardiogenic syncope) is a type of syncope that is mediated by the vagus nerve. It is the most common cause of fainting.
Causes[edit | edit source]
Vasovagal syncope typically occurs when the body overreacts to certain triggers, such as the sight of blood or extreme emotional distress. The nervous system malfunctions, causing a sudden drop in heart rate and blood pressure, leading to a reduced blood flow to the brain, which results in a brief loss of consciousness.
Symptoms[edit | edit source]
Symptoms can include dizziness, lightheadedness, blurred vision, and pale skin. The person may sweat, feel nauseous, have a slower heart rate, or have a weak and rapid pulse.
Diagnosis[edit | edit source]
Diagnosis is typically based on the person's medical history and a physical exam. Tests may include an electrocardiogram (ECG), tilt table test, and blood tests.
Treatment[edit | edit source]
Treatment may involve learning to avoid triggers, physical therapy, medications, or the use of a pacemaker.
See also[edit | edit source]
Vasovagal syncope Resources | |
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Contributors: Prab R. Tumpati, MD