This Is MS Multiple Sclerosis Community: Knowledge & Support

Work done in our jugulars may be more prone to clotting than work done in other veins. Jugulars collapse in size when we are upright, limiting the flow. In some patients, flow is slow in the jugulars even after venoplasty, and that slow flow can contribute to clotting. PwMS may also have a tendency toward more coaguable blood.

So perhaps a platelet test should be used in CCSVI patients? I was reading about platelet testing here, although this was not in CCSVI patients:
http://www.medpagetoday.com/MeetingCove ... id=5517461

Antiplatelet drugs Clopidogrel and/or aspirin are sometimes prescribed after a CCSVI treatment or in combination with Pradaxa or an anticoagulant. If 9% of patients are nonresponders to Plavix or aspirin, that is a significant amount of people who would not be getting any anticoagulation or antiplatelet effect at all if only aspirin or Plavix is prescribed. Outcomes of clotting can include fully occluded jugular veins or pulmonary embolisms.

If a doctor prescribes only aspirin and/or Plavix, it might be a good idea to ask if platelet testing can be done, or to consider Pradaxa or other anticoagulants that work differently than the antiplatelets. Not meant as medical advice...