@sb4ca I think you have some complexity with this issue of syncope. I am suspecting that because of scar tissue and tightness in your neck from cervical spine surgery and perhaps muscle spasms, that it may be able to affect nerves involved with your heart rate or blood pressure. The body has a mechanism for when blood pressure gets too high that causes syncope. That used to happen to me because I was fearful of trauma and pain and anxious about it and I would pass out. That was described to me as my body's way to diffuse a situation of blood pressure getting too high due to fear that essentially dilated blood vessels to drop pressure instantly. I could always tell when it was coming like you. It sounds like you are in a similar situation. Do you know what triggers this for you?

Have you talked to your spine specialist about this?

What may possibly be beneficial would be to do myofascial release therapy to loosnen tight scar tissue and tight muscle tissue that may be provoking the nerve nearby.

Here is our discussion on MFR therapy.
https://connect.mayoclinic.org/discussion/myofascial-release-therapy-mfr-for-treating-compression-and-pain/
There is a provider search at this link.
http://mfrtherapists.com/