Post date: September 27, 2011
Vein mapping is a technique performed with an ultrasound probe using doppler technique that pictures and "maps" all of the veins under the skin on the arms. It gives the surgeon the size, depth, and flow of blood in these veins and allows for better planning in the surgical placement of a fistula. Veins need to be of sufficient size and flow to be successfully used as a fistula. A fistula must be placed anywhere from 3 to 6 months prior to use on dialysis.