Squeakycat wrote:
drsclafani wrote:
There are some treating physicians who are of the opinion that failure to respond, means that the symptoms are not caused by CCSVI. that may be true in many patients, however, i think that this case shows that even aggressive dilatation may not provide relief from valvular or septal obstructions. We can all understand failure of angioplasty against septal obstructions: the suptum is pushed back against the wall, rather than displaced from the wall and I am certainly challenged by septal obstructions. Very aggressive dilatation may tear the point of attachment of the septum to the wall and provide some relief but the margin for error may be slim. It is certainly not a first line attempted treatment.
But the main point that I am illustrating is that failure to obtain relief after angioplasty does not necessarily mean that "CCSVI treatment is not for you"
CCSVI is defined as impairments in venous flow in a particular set of veins, the big pipes that you are treating.
Is there any reason to think that there may not be problems in other cerebral veins that you don't image or treat and that these problems are the critical ones for a particular patient? The patient gets some relief from opening the jugular and/or azygous veins if there are impairments, but still has problems with other veins that you don't image or treat?
If this were the case, CCSVI treatment might provide some relief, but leave other problems untreated.
Yes, that is possible, but i am studying the dural sinuses, the jugular veins, the brachiocephalic veins, the azygous vein, the left renal vein, the left ascending lumbar vein and the left iliac vein. There isnt much left to study.
The CCSVI theory of MS proposes that outflow obstruction results in backjets into the deep veins that lead to microhemorrhage around those deep veins and this results in inflammatory lesions, demyelinization and uiltimately axonal destruction with symptoms. The CCSVI theory of symptoms proposes that outflow obstruction deranges cerebrospinal hemodynamics and csf hydrodynamics and results in cerebrospinal dysfunction and symptoms.
When the veins are opened by balloon angioplasty, rapid compression of the dilated vein should no longer result in backjets but rather to improved forward flow back to the heart. Will that improve MS with time? Good question, needing a longer term answer. It probably depends upon how much neuronal destruction has occurred.
When the veins are open by balloon angioplasty, cerebrospinal blood flow and csf outflow should be improved. Should this lead to symptomatic improvements? Possibly. But if demyelinization of MS results in the same symptoms, it is possible that eliminating the venous outflow obstructions just won't have the same effect. If the symptoms of venous outflow obstruction predominate, then it is possible that patients will obtain clinical improvements.
This is how I rationalize why some patients obtain relief and others do not.