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I have posted this in the past on the Flownet but we do not perform cold immersion we only perform warm immersion.
Yes, the waveforms are abnormal pre warming.  If the waveforms are abnormal post warming the patient is diagnosed with a fixed obstruction.  If the waveforms increased post warming, they  are diagnosed with a  vasospastic condition.
Almost all of our confirmed Raynauds patients have abnormal waveforms pre warming. 
 
Chris Willis RVT
Coordinator
Vascular Laboratory
Eastern Maine Medical Center
Bangor, Maine 04401
Phone:  (207) 973-7471
Fax:  (207) 973-7450

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From: UVM Flownet on behalf of Smith, Matthew G.
Sent: Tue 1/12/2010 10:40 AM
To: [log in to unmask]
Subject: Re: cold immersion studiies



Now, if it's a fixed obstruction, would you have an abnormal resting study (before cold stress)?

 Matt

-----Original Message-----
From: UVM Flownet [mailto:[log in to unmask]] On Behalf Of Willis, Chris
Sent: Tuesday, January 12, 2010 10:35
To: [log in to unmask]
Subject: Re: cold immersion studiies

By warming the digits you can determine whether it is vasospastic vs fixed obstruction.

Chris Willis RVT
Coordinator
Vascular Laboratory
Eastern Maine Medical Center
Bangor, Maine 04401
Phone:  (207) 973-7471
Fax:  (207) 973-7450

________________________________

From: UVM Flownet on behalf of Smith, Matthew G.
Sent: Tue 1/12/2010 10:29 AM
To: [log in to unmask]
Subject: Re: cold immersion studiies



I think the treatment is typically with medication (unless it's a fixed obstruction).



 Matt



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From: UVM Flownet [mailto:[log in to unmask]] On Behalf Of Betty-Sue/Elizabeth
Sent: Tuesday, January 12, 2010 09:23
To: [log in to unmask]
Subject: Re: cold immersion studiies



Is there treatment if the test proves positive? e/rdms

        ----- Original Message -----

        From: Pizzo, Barbara <mailto:[log in to unmask]> 

        To: [log in to unmask]

        Sent: Monday, January 11, 2010 2:38 PM

        Subject: Re: cold immersion studiies

        

        Being in the cold northeast, we do several per year. I find it interesting that it is suggested that you check these 1 minutes apart. Can someone furnish a reference for this vs the timing that I suggested. I would love to decrease the time for this study if it still produces a good result.

        

        

        Barbara Pizzo, BS RVT

        Technical Director, Vascular, Neurologic and Non-Invasive Cardiology Services

        St. Joseph Medical Center

        610 378-2802

        [log in to unmask]

        

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