@nemo - There have been recent discussions, about pressure gradients being lower when a person is lying supine for an ultrasound or angio/venogram but elevates when sitting or standing. If you click on the magnifying glass search icon & type pressure gradient into the search box, quite a number of posts that mention pressure gradients will come up. Part of the discussions has been that some doctors won’t do IJV decompression surgery if the pressure gradients aren’t high, but Dr. Liu in New Jersey doesn’t use that as a criterion to determine whether or not surgery will be helpful because he recognizes that the pressure gradient isn’t the “end all” for diagnosing how badly compression is affecting a patient. He also takes symptoms into consideration.
It seems to me that your pressure gradients are lower than the average which @TheDudes post mentions which might mean you have a CSF leak which in turn would give you terrible headaches & other symptoms:
Here’s a link to one post that mentions pressure gradient elevating w/ sitting:
I also agree that the number of doctors that has been suggested to do your surgery is unrealistic & probably unnecessary. In the US there are several ENT skull base surgeons who have a neurosurgeon assist for IJV decompressions requiring a C1 shave, but there are also those ENT skull base surgeons who do both the styloidectomy & IJV decompression/C1 shave without the help of a neurosurgeon.