When a PIV catheter is not properly secured, motion and micro-motion within the vessel cause injury to the vein. This damage to the vein is a primary cause of phlebitis, a distressing complication of PIV therapy. Additional complications of inadequate stabilization of the PIV catheter are infiltration, leaking at the insertion site, pain, infection and dislodgement. According to Royer (2003), the most common reason for PIV catheter failure is infiltration and dislodgement. Infiltration is more dependent on keeping the extremity still, where phlebitis is dependent on injuries due to the chemical nature of the drugs and fluids infused or by the physical trauma to the endothelium from IV pushes.