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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 ------------------------------------------------------------------------------ See what's free at AOL.com. 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