CCSVI and MS, Prof. Zamboni to counterattack Almost a year ago, a Canadian study had stated that the veins of the neck restricted are common in healthy people as in those with multiple sclerosis. This could have been the coup de grace of Zamboni theory , for which clogged blood vessels can cause debilitating neurological disease multiple sclerosis. But now Professor Zamboni has gone on the offensive with a new publication in the scientific journal Veins & lymphatics entitled How to objectively assess primary jugular venous obstruction (How to objectively evaluate the obstruction of jugular venous primary), which argues that the Canadian of Traboulsee published in the Lancet had methodological limitations that do not allow you to separate the healthy subjects from patients with multiple sclerosis. According to Prof. Zamboni the authors of the Canadian study confirmed the presence of chronic venous insufficiency cerebrospinal with a high prevalence of about 70% of the Canadian population, but with no significant difference between patients and healthy controls. However, to evaluate the stenosis have used a criterion never published, as an alternative to the classical measuring the diameter in the segment immediately preceding the narrowest point. They measured the stenosis over the entire length of the internal jugular vein, comparing with the maximum diameter of the narrowest point. It has been shown, by the results on normal anatomy, as the diameter of the jugular bulb normally exceed 50% of the minimum diameter of the internal jugular vein, clearly demonstrating why Canadian researchers found no significant differences among people with multiple sclerosis, their siblings and healthy controls unrelated. Moreover, as a result of their measurement, the wall of the stenosis is overlooked part of primary venous obstruction, because in most cases of obstruction is the result of intraluminal obstacles, as considerable part of truncal venous malformations, and / or compressions; rarely hypoplasia outside. Finally, several recently published methods can be adopted for the objective assessment of jugular flow reduced during chronic cerebrospinal venous insufficiency, by means of magnetic resonance imaging, non-invasive ultrasound and plethysmography. This can help to improve the evaluation of cerebral venous return in the near future. (Google Translate)
Posted on: Mon, 29 Dec 2014 00:18:31 +0000
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