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What is the vasovagal syndrome?
5 doctors weighed in

Dr. Cynthia Thaik
Internal Medicine - Cardiology
4 doctors agree
In brief: Simple faint
Vasovagal syncope is the most common cause of a simple faint.
It is a neurocardiogenic response whereby a trigger ( ie blood draw, dentist drill) cause a surge of adrenaline causing a strong heart beat which feeds back on the vagus nerve that then leads to a chagall stimulation which cause dilatation of the blood vessel (lowers blood pressure) and slow heart rate.

In brief: Simple faint
Vasovagal syncope is the most common cause of a simple faint.
It is a neurocardiogenic response whereby a trigger ( ie blood draw, dentist drill) cause a surge of adrenaline causing a strong heart beat which feeds back on the vagus nerve that then leads to a chagall stimulation which cause dilatation of the blood vessel (lowers blood pressure) and slow heart rate.
Dr. Cynthia Thaik
Dr. Cynthia Thaik
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