This Is MS Multiple Sclerosis Community: Knowledge & Support

Nunzio
if the azygos vein is obstructed, then increased flow in that area because of renal vein and iliac stenosis is potentially deliterious. However if there is no obstruction of the azygos, then i think flow will not be overwhelming. Remember that left iliac stenosis is well compensated by using the cross pelvic collaterals into the inferior vena cava

Also, i did not find any mention of treatment of the may thurner sydrome during liberation in their paper.

We need more information

Cavo-spinal phlebography in myelopathies. Stenoses of internal jugular and azygos veins, venous compressions and thromboses.

Acta Radiol Suppl. 1976;347:415-7.
Leriche H, Aubin ML, Aboulker J.
Abstract

Increased intraspinal venous pressure, resulting according to ABOULKER in numerous spastic paraplegias and quadriplegias is due to multiple venous abnormalities demonstrated by cavo-spinal phlebography. The most frequent are stenoses of the internal jugular veins, the left renal, the left iliac veins, the azygos veins and compressions of the innominate venous trunks. These abnormalities cause a permanent stasis in the intraspinal plexuses through excessive supply or insufficient drainage. Out of 80 patients, 60 per cent had at least 2 abnormalities, 38 per cent at least 3 abnormalities.

Dr. S, what is your take on this? Could endolethin-1 be tied to stenosis?

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Increased endothelin-1 plasma levels in patients with multiple sclerosis.

Haufschild T, Shaw SG, Kesselring J, Flammer J.

University Eye Clinic, Basel, Switzerland.
Abstract

OBJECTIVE: We tested the hypothesis that the plasma level of endothelin-1 (ET-1) is increased in patients with multiple sclerosis (MS). The peptide ET-1 is one of the most potent known vasoconstrictors. An increased level of endothelin could explain some of the vascular symptoms of these patients.

MATERIALS AND METHODS: A specific radioimmunoassay was used to determine ET-1 plasma levels. Twenty patients with MS were compared to 20 age- and sex-pair-matched healthy subjects.

RESULTS: The plasma ET-1 levels were, on average, 224% higher in the patients with MS than in the controls (p < 0.005). The mean ET-1 levels (mean +/- standard deviation [SD]) were 3.5 +/- 0.83 pg/mL (min 2.13, max 5.37 pg/mL) in patients with MS and 1.56 +/- 0.3 pg/mL (min 0.9, max 2.13 pg/mL) in healthy volunteers. Neither the different forms nor stages of MS had an influence on the results. The ET-1 level was also not correlated with the duration of the disease.

CONCLUSIONS: The plasma ET-1 level is markedly and significantly increased in patients with MS. Neither the cause of such an increase nor the pathogenetic role is known.

Sounds like finding endothelin-1 plasma levels is a blood test...I wonder how expensive it is to do? Might be an useful marker for "MS" symptoms if a correlation could be established.

Donnchadh

The figure that was posted in the forum the other day, that Dr. Sinan was finding and correcting azygous issues in 95% of patients, is startling if it can be verified.

While I agree with what Dr. Sclafani said above about the Doppler findings for the jugulars, the azygous cannot be imaged outside of a catheter venogram, and the azygous is an area in which the different docs have different techniques and expertise.

Dr Sclafani,

On the report of my Doppler, it says "Collateral circulation via left lobe of the thyroid gland was noted".

Is it something that can be the cause of thyroid gland disorders? I would like to know what you think about that.

Thank you very much.

For information, Dr. Sinan reported that 95-96% of his patients have abnormal valves or webs in the azygous. He said this at 42:00 to 42:40 into the presentation at
http://www.youtube.com/watch?v=cChReoCFEN0

Dear Dr. Sclafani,

Here is my situation... I've done the procedure in July the 8th to correct stenosis in the LIJ and RIJ and three in the azygos. Dr. Martins Pisco put a stent in my left jugular and did angio in the right and in the azygos. I felt some small improvements right afterwards but they resumed one week after. In September, I experienced a small relapse and did a course of steroids. I have talked to Dr. Pisco about this and he thinks that there might have been some restenosis, probably in teh right jugular. I have agreed to go back later for a new procedure in which he'd probably put a stent in my RIJ.

What's your opinion on this? I understand you oppose stenting but in what grounds?

The rate of restenosis in jugulars has been quite high and many people are flaring as they renarrow. Is there a better alternative?


Thanks for your attention.

Spiff

Dr. S. What does proximal mean? I understand it means where it starts ... so where is the proximal part of the azygous?

That first category has an "or" in it, so it could mean jugular or azygous. I'd divide that category in half and add an additional 15% to your 14% figure, making 29% with no azygous involvement, but with the caveat that my math is monkey math.

Besides Dr. Sclafani and Dr. Sinan, do any of the other docs seem like azygous experts? It's ok to pm me rather than post here.

ConstableComfortable, the external jugulars drain the face, not the brain, so if there is reflux I don't think it would damage the brain like IJV reflux.

one eye
what dr z found was the there was a 38% reduction in NEW LESIONS.
Some neurologists say that that is the natural way of things: that new lesions progressively reduce with time and that exacerbations are reduced with time as the disease goes into the progressive form

but nonethelss, it is compelling data

There has yet to be a publication on the long term effects of stents in the jugular vein. I know of one soon to be publication that shows that stents do not migrate, but thromboses seem to be occuring more so from stenting than balloon angioplasty. My major concern is that in the upright position (greater than 50% of the teim) there is little flow through the jugular vein. A blood vessel with no flow and a foreign body seems like a set up for thrombosis. But time will tell.......thus i choose to have someone other clinician and their patients make that analysis. For me, i will just redilate as often as necessary.

I think that part of the reason for the relapse is not restenosis but inadequate angioplasty that never creates sufficient stretch to tear the abnormal collagen and valves.



yes actually

1. better technique of angioplasty
2. use of less stents
3. conservativism (less ballooning) toward high narrowings
4. aggresiveness (larger diameter balloons) toward lower narrowings
5. vigilant surveillance by ultrasound at one, three, six , twelve and eighteen months
6. liberal repeat angiography to try to avoid relapse once surveillance shows recurrent ccsvi BEFORE relapse

But what is a doctor to do if it is clear that the vein is not helped by ballooning, or even worse, looks like it is narrower or collapses at the time of initial angio? What option is available except a stent, I wonder? Try a balloon that is wider than the diameter of the healthy parts of the IJV and hope it doesn't tear? Leave it in worse shape? Or...???

If stents aren't an option, what is the best course when faced with an even narrower vein than it was to begin with as the result of ballooning?

Some treating physician recently described the sinan balloon inflation technique of discovering azygos vein malformation as Radiologic Braille. I didnt like the pergorative term but lets face it, we need to validate this. No one has ever done this in normal adults

the doppler measures hemodynamic effects of abnormal venous return from the spine and brain. Abnormal doppler has been shown to be associated with azygos flow. Not to say that the doppler images the veins of the spinal cord anatomy. rather it measures the hemodynamics.

These are difficult decisions for people. They have spent considerable money, gotten disappointing outcomes and need to have some reason to double their financial hit without guarantee of improvement at this point. That is what i mean about the decision between patient and doctor