The difference between CCSVI/MS and Stroke are
Basically HYPOXIA VS ANOXIA
CCSVI causes Chronic INTERMITTENT HYPOXIA ( lower than normal oxygen) this " starves" the brain cells of fuels ( both oxygen/ glucose) to do their jobs. As with any chronic starvation it gets worse over time until the tissue ultimately dies. Remember that position alters the blood pathways and that the vessels involved are varied.
STROKE causes Acute ANOXIA ( No oxygen) to the tissues that are blocked by the interrupted blood flow. This can be caused by a clot or a ruptured vessel such as an aneurysm. If the brain tissue has no way to get fuel (oxygen and glucose) in adequate amounts it dies. New treatments work at restoring oxygen/ glucose rich blood to the infarcted tissue with varied success. Time being very crucial for good outcomes.
Points to ponder at that the brain uses 60-70 % of our glucose- more with complex thinking
And the brain uses 35% of our oxygen.
Many parts of the brain are quite sensitive to lowered fuels specifically the eye, the basal ganglia and hippocampus. The most resistant to lack of oxygen is the brain stem where breathing and basic body functions are controlled. The Immediate symptom relief seen post venoplasty coincides with the symptoms caused by hypoxia in other conditions.
To learn more about hypoxia google hypoxic or anoxic encephalopathy- I believe ( and many others) that CCSVI causes a very , very, very slow version of hypoxic encephalopathy compounded with a few other things, such as the effect of iron deposits and other triggers. How this dovetails with MS no one knows, but it sure sounds like a big part of the cause to me.
Restoration of normal oxygen relieves symptoms that are caused by lack of fuels within seconds if the tissue is not permanently damaged. If it is severely damaged the effect can be seen over time. This is seen post "code blue" and near drownings.
Cat (Catherine Somerville on FB)
My 35 yo daughter is newly dx 8/19/10 (had 12 symptoms)
Dx with Type A CCSVI- 1 IJV & double "candy wrapper" appearance of her Azygos
Venoplasty done Sept 21, 2010
Doing extremely well-