Q: What length of dialysis catheter is appropriate for insertion via femoral vein?


Answer: 20-24 cm

Insertion of hemodialysis catheters less than 15-17 cm may cause higher recirculation rates as tip of the catheter is probably positioned in the iliac vein. Similarly, contrary to popular belief very long catheter like more than 30-32 cm is not appropriate either as flow rate decreases with increasing length of catheter. A dialysis catheter of more than 20-22 cm should be adequate for most adults to position the tip of the catheter in the inferior vena cava, which minimizes recirculation.


Reference:

Little MA, Conlon PJ, Walshe JJ. Access recirculation in temporary hemodialysis catheters as measured by the saline dilution technique. Am J Kidney Dis 2000; 36:1135.