eli5 , what’s vasovagal syncope?

Question

I cut my finger and bled (not too bad) and almost fainted, BUT I am not afraid of blood, is this a vasovagal syncope response?

In: 2

Answer 1

It’s a reaction to a trigger, most commonly the sight of blood triggers blood pressure to drop. Some think this is a defence mechanism to stop you from bleeding out faster, but the other effect it can have is a rise in heart rate, something that is counterproductive to bleeding out slower.