Jugular--
That's not correct.
Internal jugular vein valve incompetence or insufficiency means the valves are open during valsalva, and allow blood to flow upwards, from the heart to the head. That's not good. The valve should close during elevated throracic pressure or valsalva.http://www.umbjournal.org/article/S0301 ... 7/abstractQuote:
Valvular insufficiency in ACUV was diagnosed when reflux of an air-based echo contrast agent through the valve could be detected.
contrast agent going thru open valve during raised pressure = not good.Quote:
Jugular venous reflux (JVR), which could be detected at rest or during Valsalva maneuver (VM), is resulted from an abnormally reversed venous pressure gradient in internal jugular vein (IJV), which pressure is beyond the competence of IJV valves(5-7).
http://www.ant.org.tw/Print/Folder/9950.pdfreflux during raised pressure =open and incompetent valve.Quote:
Abstract
We studied the function of right internal jugular vein valves during cardiac catheterization in 32 patients and external jugular vein valves in vitro from 13 dogs. Patients with normal central venous pressure had competent valves during cough-induced transvalvular pressure gradients of 52.4 +/- 8.6 mm Hg. Ten of 15 patients with elevated central venous pressure had either incompetent or absent internal jugular valves, the latter occurring only in patients with long-standing, severe tricuspid regurgitation. During coughing, competent valves were also demonstrated in the left internal jugular and in the right and left subclavian veins. The excised canine valves were competent at a static transvalvular pressure of 81.8 +/- 3.7 mm Hg. Five of six excised valves remained competent during pulsatile transvalvular pressure of 64.8 +/- 1.9 mm Hg. Thus, thoracic inlet venous valves are usually competent during sudden increases in intrathoracic pressure. These valves may play an important role in establishing the extrathoracic arteriovenous pressure gradient necessary for forward blood flow during cardiopulmonary resuscitation and other states with high intrathoracic pressure.
http://www.ncbi.nlm.nih.gov/pubmed/7053282incompetent valve=missing valve or "wide open jugular".no valve or wide open jugular = no cardiopulmonary resuscitationIn the NEWS TODAY:::
woman has sex, loses memory due to open valve:
Quote:
The closest thing to an explanation researchers have for this sex-triggered amnesia is that the problem may not begin in the brain, but in the neck. In a January 2010 study published in the journal Stroke, Ameriso and his colleagues conducted sonograms of the necks of 142 patients who'd experienced transient global amnesia within the last week. They found that 80 percent of the patients had what is called insufficiency of the valves in the jugular vein.
This vein, which runs down the side of the neck, carries spent blood from the brain back to the heart. Valves in the veins prevent blood from flowing backward toward the head, but if the valves don't close sufficiently, blood could seep back upward.
http://bodyodd.msnbc.msn.com/_news/2011 ... mory-cleanIF THE VALVES DON"T CLOSE, you could lose your memory, or have a stroke, etc. They actually mention straining on the john, lifting things and having sex in this article. It's a must read....
Closed leaflets or closed valves are called truncular venous malformations.
This is what Dr. Zamboni has found, related to CCSVI and reflux WITHOUT VALSALVA.
There is a distinct difference between the 2.
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Husband dx RRMS 3/07
dx dual jugular vein stenosis (CCSVI) 4/09
dual stents placed 5/09
CCSVI in MS