This Is MS Multiple Sclerosis Community: Knowledge & Support

http://clinicaltrials.gov/ct2/show/NCT0 ... svi&rank=4


Are the answers in our eyes?

This may be quantifiable evidence of vascular abnormality in CCSVI in MS. Very happy if it is so.

Didn't I tell you that eyeball veins are all little Starling Resistors? I don't get red eyes except from THC and allergic reactions though, far as I know. What's an optomap?

_________________
"Try - Just A Little Bit Harder" - Janis Joplin
CCSVI procedure Albany Aug 2010
'_MS' is over - if you want it
Patients sans/without patience

As much as I love the term 'Starling Resistors' (with connotations of science fiction and birds all in one), I forget what it means.

Ohm's law describes a resistance to a current caused by a pressure. It can describe a carbon resistor in an electrical circuit where copper conducts a current or flow of one fluid called electricity, or a narrowing in a vein where heart pressure pumps blood. The math is the same. Voltage is the analog of pressure. Flow is the analog of current. Resistance to blood flow is the analog of resistance to electrical current.

Ohm's law is V= IR. Voltage or pressure equals resistance times current or flow. V is potential energy. I is movement of fluid per second. R is a measurement of the carbon resistor or the narrowing's resistance to the movement of the fluid (electricity or blood). In electricity the units of R are Ohms. I don't know what they are for blood.

With a Starling resistor the analogy breaks down because the vein is flexible and surrounded by a different fluid under a different pressure which presses in on the vein walls. Since they are flexible the viscosity of the fluid inside increases (this is like resistance). The math gets far less linear. The vein is now a kind of Starling Resistor, named after a guy who built one in a box to model the lung.

Things get exceedingly more complex because the pressure (and flow, and also the Starling fluid pressure/resistance: spinal or eyeball) are not always constant. They pulsate, and sometimes even alternate between negative and positive. One guy even used wave mechanics to describe them.

Clear as mud?

_________________
"Try - Just A Little Bit Harder" - Janis Joplin
CCSVI procedure Albany Aug 2010
'_MS' is over - if you want it
Patients sans/without patience

We've talked about Optomaps before. I'll look for the link.

Hopefully, Dr. Diana will post soon. Has she posted yet about her busy weekend of giving presentations?

Edit -- to add the link: http://www.thisisms.com/ftopicp-166124.html#166124

It would be nice to not have a constant black haze over the vision in my left eye. Maybe this is related.

It's clearer, 1eye, although I am not yet ready for the pop quiz.....

An odd thing: a narrowing, if fixed, can be a fixed resistance. But Starling pressure modulates not diameter, which would be really powerful, but viscosity. There still might be a gain value greater than 1. So if there is negative feedback, great! You have the biological equivalent of a negative feedback amplifier. A transistor-like or vacuum tube-like apparatus inside the human body. Errors in the amount of pressure or flow from input to output would be corrected by the feedback. But if the gain ever got to be positive, greater than +1, you would have oscillation, and the system would become unstable and self-destructive. What influences that gain? The density and viscosity of blood and spinal fluid. The compliance of the vein walls. Heat. Temperature. Perhaps the temperature above which I melt is the one where my internal amplifiers' (Starling resistors') feedback goes positive!

Maybe I should ask Dr. Beggs about this one.

_________________
"Try - Just A Little Bit Harder" - Janis Joplin
CCSVI procedure Albany Aug 2010
'_MS' is over - if you want it
Patients sans/without patience

it sounds VERY interesting. an operator independent diagnosis tool for ccsvi!

more information at their homepage:

http://www.totaleyecare.com/Vascular-Fu ... -CCSVI.htm