thank you..
 
but is there a standard volume of blood that should go to the brain?
Please, I have never heard of this. I under stand volume flow, and understand hemdynamic  changes, just never this calculation... Did I miss it somewhere. Is this used frequently.
 
Reason I am asking so many questions is I have never read this. Is this an old method of CCA volume flow rating?
 
Jason
 

Date: Wed, 5 May 2010 14:34:17 -0500
From: [log in to unmask]
Subject: Re: ICA steal from CCA to Subclavian bypass graft
To: [log in to unmask]

Jason,
 
stroke volume is calculated by the following  csa*vti.  where csa = crosectional area of the vessel,  vti = velocity time integral.
 
as i was saying it will give you the total flow in the carotid and the total flow in the graft simple math will tell you how much is left over to go to the brain.  this does not compensate for collateral, circle of willis, or any additional vertebral contribution to the cerebral circulation.  thats why the "steal" is a clinical diagnosis.
 
I had a patient once that had a cca to subclavian graft, an axillary to fem graft, a fem to fem graft and bilateral fem tib grafts.  his entire bilateral lower extremity circulation was fed by one common carotid.  he did not walk far before becoming syncopal.
 

...TJ

To handle yourself, use your head. To handle others, use your heart.


On Wed, May 5, 2010 at 12:08 PM, JASON r <[log in to unmask]> wrote:
what is a STROKE volume....? Is this the same as Graft Volume flow? And what is the correlation of stoke, and bypass grafts.....
Is there data on this... do you have the resource..
Curious
Jason
 

Date: Wed, 5 May 2010 11:25:55 -0500
From: [log in to unmask]

Subject: Re: ICA steal from CCA to Subclavian bypass graft
To: [log in to unmask]

calculate a stroke volume in the cca prox to the origin of the graft and a stroke volume in the graft, that will give you actual numbers for how much is being diverted.  the "steal" is a clinical diagnosis based on symptoms.
 

...TJ

To handle yourself, use your head. To handle others, use your heart.


On Wed, May 5, 2010 at 11:17 AM, Carla Stanley <[log in to unmask]> wrote:
Quick question:
Can you have a ICA steal from a CCA to subclavian artery bypass graft? If so how would you go about documenting it?

Carla Stanley, RVT
Comprehensive Vascular Care





To unsubscribe or search other topics on UVM Flownet link to:
http://list.uvm.edu/archives/uvmflownet.html

To unsubscribe or search other topics on UVM Flownet link to: http://list.uvm.edu/archives/uvmflownet.html

The New Busy think 9 to 5 is a cute idea. Combine multiple calendars with Hotmail. Get busy.
To unsubscribe or search other topics on UVM Flownet link to: http://list.uvm.edu/archives/uvmflownet.html

To unsubscribe or search other topics on UVM Flownet link to: http://list.uvm.edu/archives/uvmflownet.html

The New Busy is not the old busy. Search, chat and e-mail from your inbox. Get started. To unsubscribe or search other topics on UVM Flownet link to: http://list.uvm.edu/archives/uvmflownet.html