Traduction de «veins » (Anglais → Français) :

We are also quite concerned about putting stents into dilated veins because, as opposed to arteries, which they are designed to go into, veins have a pressure that is about one fifteenth of that in an artery and the combination of injuring the endothelial surface or the lining of the vein with the low-flow state and low pressure in a vein makes clotting much more likely in that setting.

Through clinical experience and published studies, we know that balloon dilation of large veins is associated with a high rate of recurrent narrowing or blockage, so even if CCSVI exists, as proposed by Dr. Zamboni, one can predict that the impact of dilating narrowed veins on the ability of blood to drain from the brain or spinal cord would not be sustained as these veins would likely re-narrow over time.

While fascinating, there are some theoretical problems with Dr. Zamboni's suggestion that narrowed or blocked veins could cause MS. If the veins leading out of the brain or spinal cord in patients with MS were narrowed or blocked, one would expect that the pressure in the veins in the brain or spinal cord would be elevated because it would be harder for the blood to get out of those organs.

...t have been performed on veins in Canada, including, procedures for Budd-Chiari syndrome and May-Thurner syndrome; (e) what is the government's position on ballooning veins and why does it consider that ballooning veins even once could be unsafe on fragile veins, even though participants involved in the proposed clinical trial will experience two procedures-one real, one simulated-in a one-year period; (f) is the government consulting with Canadians with MS, if so, (i) provide a list of all CCSVI groups the Minister of Health has met with along with the dates of the meetings, (ii) provide a list of all MS groups the Minister of Heal ...[+++]th has met with along with the dates of the meetings, (iii) provide the number of Canadians with MS the Minister of Health has met and the dates of all meetings, and if the government is not consulting, (iv) why not; (g) how does inviting the investigators of the seven MS-funded CCSVI studies to participate in the consensus workshop on ultrasound imaging meet CIHR's conflict of interest guidelines; (h) what were the results of the consensus workshop on ultrasound imaging, and specifically, (i) what exact imaging procedure will be used in the clinical trials, (ii) will the investigators use Dr Zamboni's procedure and, if so, will they be trained by Dr Zamboni, (iii) will the investigators use multi-modal imaging and, if so, what techniques, (iv) what training will investigators undergo, by whom, what is the number of procedures they will have to perform, and how will “sufficiently practiced” be ensured; (i) approximately how many Canadians with MS have died since November 2009, and by what EDSS score will Canadians with MS have worsened, on average by, since the same time period, and specifically, (i) how many are diagnosed each month, (ii) how many die each month; (j) when will patient accrual actually begin for clinical trials which were to begin on November 1st; and (k) what, if any, research or investment has been undertaken to consider whether to investigate the handling of the CCSVI file, particularly in relation to the “fast-tracking” of a new procedure in Canada, and the down-loading of services to provinces, (i) what are the dates, results and recommendations of any research, (ii) the dollar amount of any investment, (iii) if results and recommendations are available, will Health Canada be acting upon them and when? ...

There was important pertinent information that the August 26 reviewers missed, possibly 25 different venous abnormalities in the neck and chest, including missing jugular veins, truncated jugular veins at the clavicle, in the middle of the neck, spider veins, stenosed veins, string-like veins, imaging of iron deposits in the brain, video of reflux in the deep cerebral veins, the internal jugular veins and flow or lack thereof in the internal jugular veins.

In the same vein, local development and rural and urban development activities were given priority in the regional programmes.