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It's been a while since I reviewed the entire paper but your right - there are a lot of things that alter velocity in an extremity artery - with volume flow being the primary one.  There are several things that affect flow to the extremities and if the flow changes, so will the velocity.   This is why I really don't look at the absolute PSV in a peripheral vessel but was wondering what others thought.
  ----- Original Message ----- 
  From: Kathy Palmieri 
  To: [log in to unmask] 
  Sent: Friday, June 15, 2007 9:28 AM
  Subject: Re: native arteries


  Does the paper mention anything about cardiac output? If the pump isn't working well, the velocities will be lower due to decreased perfusion. 

  Kathleen Palmieri, RVT
  President/Senior Consultant
  Cardiovascular Technology Resources
  a Division of KRP Accreditation Specialists, Inc. 
  Skaneateles, NY 13152
  http://www.krpaccreditation.com
  phone (315) 685-0631
  fax (315) 685-3209





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