Dawn,
   The mean velocities for TCD is a time mean flow velocity in cm/s.
Which vessel was the 105 velocity from?. Are you also using the MCA/ICA
ratio? Flow velocities can be high due to stenosis, hyperdynamic flow,
vasospasm and an elevated PaCO2. Can you give me some more details?

                                           Anne Moore RN RVT
                                           Cerebrovascular Lab
                                           University of WA


On Wed, 14 May 2003, Dawn Stirrat wrote:

> Hi all you vascular gurus out there. I am looking on information on what the
> mean velocities for TCD mean. For instance, I had a patient the other day
> who had a mean velocity of 105. Now, I know that is high, but just why, no
> one in my lab seemed to be able to tell me...just that it was that way. Any
> insight?
>
> Thanks,
> Dawn Stirrat, RVT
>
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